Research On Promotion Of Soil Fertility In Salinization Dryland Soil In Zhaozhou County In China

Zhaozhou County is located in the southwest of Heilongjiang Province, where is one of thekey drought counties, and is one of the main distribution area of saline soil. Saline soil as thereserve land resources in China has been widely attentioned. However, due to serious salinizationphenomena, soil fertility and land productivity is low and other obstacles, which restrict thedevelopment of planting industry. Aiming at the existing obstacles factors of soil salinization,through field plot experiment was carried out in Zhaozhou County, improves fertility soil research.This study set up a total of two group test, respectively is: the test of organic fertility treamnents (5treatments) and tillage treaments (5treatments), from saline soil physicochemical properties,biological characteristics and yield of crops and other aspects of soil fertility improvement,implementation of soil disturbance reduction, soil improvement and soil production theimprovement of ability, at the same time screening technology model for effective utilization oflow cost, easy popularization, good effect and sustainable dryland salinization, provide technicalsupport and guarantee for the sustainable utilization of agriculture and development.The results from the experiment indicated that1, Soil physical properties have been significantly improved, as follows: organic fertilizer+saline dryland special fertilizer and organic fertilizer+subsoil+plastic film mulching treatmentsoil maximum moisture content, film mulching can increase the soil water content. Straw highstubble returning+organic fertilizer+decomposing bacteria+inorganic fertilizer and inorganicfertilizer+organic fertilizer+subsoil+plastic film mulching+field soil water holding capacityof the largest aluminium sulphate treatment, organic manure combined with film mulching caneffectively improve the salinization of soil field capacity, improve soil water-holding capacity,single application of biological modifiers effect on field capacity of soils have little effect. Organicfertilizer+saline dryland special fertilizer and organic fertilizer+subsoil+plastic film mulching,plastic film mulching and organic fertilizer+aluminium sulphate treated soil bulk density.2, The chemical properties of soil increased significantly, as follows: organic fertilizer+saline dryland special fertilizer and organic fertilizer+subsoil+plastic film mulching treatment ofsoil nitrogen content is the highest, plastic film mulching patterns of soil available nitrogen contentis higher than that without Mulching patterns; straw high stubble fields+organic fertilizer+decomposition bacteria+saline dryland special fertilizer and inorganic fertilizer+organic fertilizer+subsoil+soil available phosphorus of film mulching treatment was the highest; organicfertilizer+saline dryland special fertilizer and inorganic fertilizer+organic fertilizer+subsoil+plastic film mulching and inorganic fertilizer+organic fertilizer+subsoil+plastic film mulching+cation aluminum sulfate treatment the maximum exchange capacity, the application of plasticfilm mulching cation exchange capacity was large.3, Soil biological traits significantly improve, as follows: high stubble, straw returning+organic fertilizer+decomposing bacteria+saline dryland special fertilizer and inorganic fertilizer+organic fertilizer+deep to improve soil catalase activity best; straw high stubble returning+organic fertilizer+decomposing bacteria+saline dryland special fertilizer and inorganic fertilizer+organic fertilizer+subsoil+plastic film mulching and inorganic fertilizer+organic fertilizer+deep processing of plastic film mulching++aluminum sulfate to increase urease activity of thesoil.4, Land production capacity was significantly improved, as follows: from the100-seed weightand yield can be seen, organic fertilizer can improve the100-seed weight and yield, among them,the best organic fertilizer+saline dryland special fertilizer effect, improvement in chemistry,inorganic fertilizer+organic fertilizer+deep tillage+plastic film mulching and inorganicfertilizer+organic fertilizer+subsoil+plastic film mulching+aluminum sulfate treatment effectbest, visible organic fertilizer and plastic film mulching was the best scheme utilization ofsalinization soil.Through the determination and evaluation of each index analysis shows: organic fertilizer+saline dryland special fertilizer and organic fertilizer+subsoil+the best technique model ofplastic film mulching for dryland salinization of efficient utilization of Zhaozhou county.