论文部分内容阅读
20世纪90年代以来,由于农田有机肥的施用量减少,土壤理化性状变差,水肥保持、供给能力减弱,综合肥力下降,影响了农作物产量。同时,农业劳动强度大、效率低的问题也较为突出;焚烧秸秆、浪费资源、污染环境的现象时有发生,影响了农业的持续、协调、稳定发展。为此,我们选定了农田机械化秸秆还田、免耕播种保护性耕作新技术,于2008年秋季开始在小麦上进行了示范研究,取得了较好效果。1材料与方法
Since the 1990s, due to the reduction of the application amount of organic fertilizer in the farmland, the physical and chemical properties of the soil have deteriorated, the water and fertilizer retention, the supply capacity weakened and the comprehensive fertility decreased, which affected the crop yield. At the same time, the problem of high labor intensity and low efficiency in agriculture is also prominent. Incineration of straw, waste of resources and pollution of the environment have taken place from time to time, affecting the sustainable, coordinated and steady development of agriculture. To this end, we selected a mechanized farmland of straw, no-till sowing new technology of conservation tillage, in the autumn of 2008 to conduct a demonstration study on wheat and achieved good results. 1 materials and methods