MTW European Type Trapezium Mill
Input size:30-50mm
Capacity: 3-50t/h
LM Vertical Roller Mill
Input size:38-65mm
Capacity: 13-70t/h
Raymond Mill
Input size:20-30mm
Capacity: 0.8-9.5t/h
Sand powder vertical mill
Input size:30-55mm
Capacity: 30-900t/h
LUM series superfine vertical roller grinding mill
Input size:10-20mm
Capacity: 5-18t/h
MW Micro Powder Mill
Input size:≤20mm
Capacity: 0.5-12t/h
LM Vertical Slag Mill
Input size:38-65mm
Capacity: 7-100t/h
LM Vertical Coal Mill
Input size:≤50mm
Capacity: 5-100t/h
TGM Trapezium Mill
Input size:25-40mm
Capacity: 3-36t/h
MB5X Pendulum Roller Grinding Mill
Input size:25-55mm
Capacity: 4-100t/h
Straight-Through Centrifugal Mill
Input size:30-40mm
Capacity: 15-45t/h
Planting crops in Qian’an tailings
Ecological rehabilitation of mine tailings Plant and Soil
2024年2月14日 Ecological engineering of tailings has been advocated to change tailings’ mineralogy, improve physicochemical properties, and accelerate soil formation (ie pedogenic 2022年11月23日 In general, the application of an iron tailings layer below topsoil to construct farmland is a feasible and environmentally friendly way to realize sustainable farmland Effects of constructing farmland with large amounts of iron 2022年10月19日 Legumes, including soybean and adzuki bean, provide plantbased protein and are important crops as well Barley, cannabis, and rice account for a small percentage of crops, which means that they may have been used Frontiers Agricultural practices of the Qin people from According to the current tailings storage and utilization rate in China, this paper analyzes the types and comprehensive utilization direction of tailings in China, and takes Tangshan area asComprehensive Utilization Analysis of Tailings ResearchGate
Coal tailings as a soil conditioner: evaluation of tailing properties
2022年7月21日 This study aimed to evaluate the potential utilisation of coal tailings waste in the soil amelioration to improve plant performance The physico–chemical characteristics of coal 2018年10月15日 Therefore, current paper presents an extensive review on five major challenges which restrict the successful restoration of the tailings including (i) heavy metal An extensive review on restoration technologies for mining tailings2022年11月23日 In general, the application of an iron tailings layer below topsoil to construct farmland is a feasible and environmentally friendly way to realize sustainable farmland Effects of constructing farmland with large amounts of iron 2024年4月1日 This involves integrating various technologies, such as optimizing varieties, planting patterns, sowing time adjustments and chemical regulations to achieve efficient Developments and prospects of multiple cropping in China
Managing fragmented croplands for environmental and economic
2024年3月21日 Optimizing the cropping structure of fragmented croplands to meet animal food demand in China can increase animal food supply by 19%, equivalent to increasing cropland Abstract Taberima S, Prabawardani S, Sarwom R, Lyons G 2020 Organic fertilizer applications improve the growth of vegetable crops and chemical properties in the tailings deposition area at Timika, Papua, Indonesia Nusantara Bioscience 12: 134142 This study aimed to observe growth responses of selected vegetable crops grown in the media of inactive tailings, the Organic fertilizer applications improve the growth of vegetable crops 2018年9月1日 A tailings pond containing over 70 million tonnes of tailing sand is located at the headwaters of the Baisha River (Fig 3) The dressing plant and tailings pond are the potential sources of PHEs Although mining operation ceased in 1999, wastes and effluents from the closed mine and the tailings pond discharge continuously into the Baisha RiverCadmium contamination in soils and crops in four mining areas, 2018年8月1日 Total mercury (THg) and methylmercury (MMHg) were investigated in 259 wild plants belonging to 49 species in 29 families that grew in heavily Hgcontaminated wastelands composed of cinnabar ore mine tailings (calcines) in the Wanshan region, southwestern China, the world's third largest Hg mining district The bioconcentration factors (BCFs) of THg and Total mercury and methylmercury accumulation in wild plants
Chinese Academy of Agricultural Sciences, Beijing ResearchGate
Qian SONG Cited by 660 of Chinese Academy of Agricultural Sciences, Beijing (CAAS) Read 16 publications Contact Qian SONG2022年10月27日 We use national and subnational data on monthly cropspecific growing areas around the year 2000 (1998–2002) for 26 crop groups, global cropland extent and crop harvested areas to identify Exploring the impact of rural labor transfer on the production and only agricultural grade lands to grow energy crops To reclaim these tailings to support energy crop growth, nutrients and organic materials are needed Pulp and paper mill byproducts have been used for amending agricultural soils and producing crops including corn (O’Brien et al 2003; Camberato et al 2006)Suitability of an organic residual cover on tailings for bioenergy crop 2019年12月13日 A complete orthogonal experiment using a pot test is conducted to investigate the effects of four amendments (biochar, peat, manure, and noncontaminated soil (NCS)) on the metal availability, mobility, and phytostabilization potential of an energy crop, king grass (Pennisetum purpureum × P thyphoideum), in Pb/Zn mine tailings The addition of Effects of amendments and aided phytostabilization of an energy crop
Spatiotemporal changes of cropping structure in China during
2018年9月28日 Understanding the spatial and temporal variations of cropping systems is very important for agricultural policymaking and food security assessment, and can provide a basis for national policies regarding cropping systems adjustment and agricultural adaptation to climate change With rapid development of society and the economy, China’s cropping structure has 2024年8月6日 Mine tailings are voluminous and often toxic wastes, released 80,000 m 3 of tailings that severely contaminated crops, as did the 1998 Aznalcóllar, and planting tree saplings 131,133,134Tailings storage facilities, failures and disaster risk Nature 2020年1月21日 Copper mine tailings without proper remediation deposited permanently in tailings ponds would pose adverse impacts to the environment Coal gangue, with high nutrients, used in infertile soil, is investigated in microcosm trials to explore the possibility of immobilize metals within the copper mine tailing in this research Therefore, a pot trial was conducted Influence of coal gangue aided phytostabilization on metal 2005年11月11日 The objective of the study was to compare the performance of exotic (Eucalyptus grandis and Acacia saligna) and indigenous (Acacia polyacantha and Bauhinia thonningii) tree species in The growth performance of exotic and indigenous tree species in
Review on Drip Irrigation: Impact on Crop Yield,
2023年4月30日 The scarcity of freshwater resources is a global concern that is exacerbated by an increasing global population and climate change induced by global warming To address this issue, the largest waterconsuming sector 2020年1月1日 A complete orthogonal experiment using a pot test is conducted to investigate the effects of four amendments (biochar, peat, manure, and noncontaminated soil (NCS)) on the metal availability Effects of amendments and aided phytostabilization of an energy crop 2022年8月11日 Chemical characterization of the formed technosoil in the planting area impacted by iron ore tailing deposition Values repre sent means ± SD (n = 9) Figures uploaded by Talita Raissa SantosRevegetation of an area impacted by iron ore tailings: evaluating 2018年1月1日 The semiarid Loess Plateau region, spanning 62 × 10 5 km 2 in northwestern China, is crucially important for Chinese arid agriculture (Ren et al, 2016)The area of rainfed cropping systems is approximately 25 Mha, accounting for more than 80% of the arable land (Zhang et al, 2014)Due to the scarcity and temporal variability of precipitation, as well as the Conservation agriculture based on crop rotation and tillage in
An ecological remediation model combining optimal substrate
2022年9月3日 @article{Song2022AnER, title={An ecological remediation model combining optimal substrate amelioration and native hyperaccumulator colonization in nonferrous metal tailings pond}, author={Le Song and Jiazhong Qian and Fawang Zhang and Xiangke Kong and Hui Li and Song Luan and Qinjun Zhang and Zhiqiang Kang and Zhantao Han and Zhaoji 2024年4月1日 Multiple cropping showed a dual emphasis on both economic benefit and grain productivity since the reform and openingup, led to a slight reduction in the total grain crop planting area Concurrently, breakthroughs in highyield technologies advanced rapidly, such as “tongrain field” (15 ton yield per hectare) and “double thousand yield fields (15000 CNY and Developments and prospects of multiple cropping in China2021年10月1日 Exploring the optimal crop planting structure to balance water saving, food security and incomes under the spatiotemporal heterogeneity of the agricultural climate Author links open overlay panel Shuo Wang a b e, Guorui Fu b c, Xiaoqing Ma b, Ling Xu d, Fenglin Yang d Show moreExploring the optimal crop planting structure to balance water 2003年11月1日 These results show that ryegrass can grow relatively well in amended Cu mine tailing containing high level of calcium carbonate Increased dry biomass production with the addition of compost has Effect of Different Amendments on Ryegrass Growth in Copper Mine Tailings
When to Plant Crops In Fall (Autumn Planting Guide)
2023年8月12日 Your first frost date is the average date that you will experience a light freeze in your neck of the woods If you don’t know this date, you can look it up by your zip code at The Old Farmer’s Almanac Temperatures at or a couple of degrees below freezing will kill most tender plants, whereas coldhardy vegetables can survive a deeper freeze2021年8月26日 In general, a farmer who intends to raise a crop has to choose between these two methods of planting: direct seeding and transplanting To briefly distinguish, direct seeding means planting at the crop area with the use Methods of Planting Crops: What Is Direct Seeding 2021年6月20日 In the northern boreal zone, revegetation and landscaping of closed mine tailings are challenging due to the high concentrations of potentially toxic elements; the use of nutrientpoor, glacigenic cover material (till); cool temperatures; and short growing period Recycled waste materials such as biochar (BC) and composted sewage sludge (CSS) have Amending mine tailing cover with compost and biochar: effects on 2016年9月15日 Semantic Scholar extracted view of "Phytostabilization of mine tailings using compostassisted direct planting: Translating greenhouse results to the field" Effects of amendments and aided phytostabilization of an energy crop on the metal availability and leaching in mine tailings using a pot testPhytostabilization of mine tailings using compostassisted direct
Effects of constructing farmland with large amounts of iron tailings
2022年11月23日 Study area The experimental site is located in a newly reclaimed farmland area in Xincheng village (41°45′ N, 119°37′ E), Xiaotang town, Jianping County, Chaoyang city, Liaoning Province, northern China (Fig 1), which is an area rich in iron ore resourcesMining waste materials, such as iron tailings and waste rock materials, occupy large amounts of landTianwei Qian's 18 research works with 34 citations and 237 reads, including: Watersoluble chitosan promotes remediation of Pbcontaminated soil by Hylotelephium spectabileTianwei Qian's research works Taiyuan University of Technology DOI: 101016/jcej2024 Corpus ID: ; CO2 capture utilizing Li4SiO4 from spent LithiumIon batteries and iron tailings offers ecofriendly benefits @article{Liao2024CO2CU, title={CO2 capture utilizing Li4SiO4 from spent LithiumIon batteries and iron tailings offers ecofriendly benefits}, author={Tianqi Liao and Yinyin Qian and Menghan Yu and Aidong Tang and CO2 capture utilizing Li4SiO4 from spent LithiumIon batteries and 2018年1月1日 The crop rotations with the highest grain yield of oil flax were FFWP (2017), WFWP (2018),WPFF (2019) and FWPF (2020); the grain yield of wheat was highest when the two precrops (previously Conservation agriculture based on crop rotation and tillage in the
Field Crops Research
2024年7月1日 Thus, at field configuration level alone, planting size and percentage of crop are the main factors influencing the yield of MǁS Although intercropped maize density was significantly negative for yield in the overall data, it was not significant in Anhui, Jiangsu and Henan, except in Shandong province (Tab S2)2012年1月1日 However, the potential for transforming tailings and brownfields into productive agricultural land may provide a partial solution to the food versus fuel debate by minimizing the need to use only agricultural grade lands to grow energy crops To reclaim these tailings to support energy crop growth, nutrients and organic materials are neededSuitability of an organic residual cover on tailings for bioenergy crop 2017年11月18日 Mining practices and the absence of proper mine land reclamation has led to heavy metal contaminated sites with serious impact on the ecosystems and risk for human health The origin of the contamination is often associated to mine tailing deposits because they are a source of the acid mine drainage (AMD) These areas are devoid of vegetation due to the Mine tailing disposal sites: contamination problems, remedial options 2021年1月1日 Plants and tailings have interactive effects and feedbacks, which are interdependent The tailings nutrients and organic matter increase after revegetation, in turn, the improvement of the tailing environment also promotes vegetation restoration (Alday et al, 2012)Especially, the physicochemical properties (such as pH, salinity, nutrients) of tailings are Soilless revegetation: An efficient means of improving
Evaluation of soil heavy metals pollution and the
2023年3月3日 1 Introduction Mining causes damage to regional vegetation [1, 2] and the tailings from ore refining are an important source of environmental pollution [3, 4]Tailings are residual wastes from the processing and 1989年3月1日 6 Agricultural crop experiments During 1968 to 1987, experiments were conducted aimed at the utilization of the tin mine tailings {'or agricultural crop production These included trials of cashew tree, vegetables, grasses and some leguminous plants Various treatments were applied to different tailing typesCharacteristics and management of tin mine tailings in Thailand2016年5月1日 Crop planting provided foods, generated incomes, and consumed water resources to different extents under different spatiotemporal agroclimatic conditions For balancing three aspects, Crop Planting Structure Optimization for Water Scarcity Qian'an (simplified Chinese: 迁安; traditional Chinese: 遷安; pinyin: Qiān'ān) is a countylevel city in the northeast of Hebei province, ChinaIt is under the administration of the prefecturelevel city of TangshanThe city spans an area of 1,227 square kilometres (474 sq mi), [3] and has a population of 775,813 as of 2021 [2]: 40Qian'an, Hebei Wikipedia
Pioneer plants promote soil formation in a mixture of bauxite tailings
2024年11月1日 However, as a mixture of bauxite tailings and red mud, BRM retains the characteristics of poor micropore structure, high salinity and alkalinity, microbial diversity loss, and low nutrient content Planting pioneer plants may improve these characteristics of BRM and potentially ‘kickstart’ soil formation processes (Zhong et al, 2021)The tailings in Tangshan area are mainly distributed in Qian'an City, Qianxi City,Zunhua City, luanzhou city and Guye District The main min erals are iron prehensive Utilization Analysis of Tailings ResearchGate2012年12月14日 Furrow cultivation associated with biogeotextile application increased soil water storages (see Fig 72), while in both furrow cultivation treatments, stored soil water was higher than in the contour planting treatments over the entire observation periodInterestingly, this effect was also observed during the drier periods, thereby extending the potential crop growing Soil Conservation on Sloping Land: Technical Options and 2024年4月1日 Governmental organizations and the general public are concerned about air PM due to its potential health consequences and pollution events (Li, Qian, and Wang, 2013) Soil pollution from organic and inorganic contaminants, such as HMs, is a worldwide problem ( Li et al, 2024 , Vamerali et al, 2010 )Heavy metals pollution from smelting activities: A threat to soil
Development and Prospect of Rice Cultivation in China
2021年4月22日 Yangzhou University/Jiangsu Key Laboratory of Crop Cultivation and Physiology/Jiangsu CoInnovation Center for Modern Production Technology of Grain CHEN Z H, XU X Z Studies on the yield formation and ecological characters of scatteredplanting rice Scientia Agricultura Sinica, 1993,26(3):3949 (in Chinese) [14] 张洪程