| This paper take soybean as experimental material,field experiment were conducted in Arong Qi Hulun Buir city of the Inner Mongolia autonomous region during 2016,where locates at at hilly and semihumid The big xingan mountain foothill.Five treatments involved in the field experiment,including width coated,no-till,straw mulching,no-till straw mulching and conventional tillage.Soil temperature,soil water storage,crop growth index,dry mass,yield and yield component of soybean were determined and analyzed.The main results are as follows:(1)Compared with conventional tillage,the width coated processing show the double effect of temperature and cooling in the period of fertility,it show the warming effect at the early stage of the birth,it show the cooling effect in the late childbearing.Accumulated temperature of soil treatment increased by 130.07 ? than conventional tillage.soil average temperature in the whole stages of 0?20 cm increase 1.18 ? than CK.And three processing such as no-till straw mulching show the cooling effect at the whole growth period;The cooling effect with no-till straw mulching is the most obvious,soil average temperature of 0?20cm reduce 1.13 ?than conventional tillage in the whole stages,soil average temperature reduces the accumulation of 120.75 ?than conventional tillage,The temperature difference of surface layer is the most obvious between different stages of fertility,As the depth of the soil increases,the difference decreases.(2)no-till straw mulching and width coated way can effectively inhibit soil moisture evaporation and obvious keep moisture effect;0?100cm soil pondage was significantly higher than 193.95 mm,192.70 mm compared with the conventional tillage at whole growth period,The overall keep moisture effect of no-till straw mulching is better than width coated,In particular,the amount of water stored in the key reproductive stage(flowering?pod)is at its highest.The supply of the crop was assured no-till and straw mulching treatment effect is not obvious.(3)Different tillage coverage measures was effective on improving soybean growth and dry matter accumulation,the effect of width coated is best,no-till straw mulching take second place,The difference of other treatment and conventional tillage is smaller.width coated and no-till straw mulching could significantly increase the plant height of soybean stem diameter?leaf area and accumulation of dry matter of plant;Finally improving soybean yield.(4)Different cultivation measures can increase the number of pods,single grain,grain weight and yield of soybean plants,the coating effect is the best,the no-till straw covers the second.width coated and no-till straw mulching processing respectively increase 43.36%,35.12%than conventional tillage of soybean yield,Water use efficiency respectively increase 15.02%,10.72%than conventional tillage.Research results show that the effect of wide planting technology can significantly improve the soybean production and coordination of soil water condition,it Suitable for application in the semi-humid arid partial soybean planting. |
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