【摘要】 为了研究保护性耕作措施与旱作农田保墒效果之间的关系,采用田间试验与室内精细试验相结合的方法研究其对夏玉米生长产量和水分利用效率的影响。研究结果表明,4种保护性耕作措施都可以提高播种期土壤墒情,0~50 cm土壤水分含量均比对照提高5%以上,而0~20 cm耕作层土壤水分含量可提高7.8%~15.55%;折合产量比对照增产7.17%~17.85%;水分利用效率提高6.36%~14.10%,以浅松覆盖处理增产效果最好,水分利用效率最高。更多还原

【Abstract】 In order to further study the relationship between conservation tillage and moisture conservation in dry farming,the method of field experiment combined with inside subtle experiment is adopted to study the effect of different conservation tillage ways on water use efficiency and yield of Maize.The results show that all the four kinds of conservation tillage ways can enhance the soil moisture in the sowing Period,the soil moisture in the 0～50 cm depth can be enhanced by 5% and that in the 0～20cm depth can be enhanced by 7.8%～15.55%,the Maize yield can be enhanced by 7.17%～ 17.85%,and the WUE can be enhanced by 6.36%～14.10%.Among the four ways,the surface-pulverize covering has the best WUE and yield.更多还原