(一)深耕是农业增产技术措施的中心,是耕作制度上的一项大革命。土壤经过不同程度的加深耕层,就能促进土壤风化和肥料的分解;可以加速土壤微生物的活动,促进有机质的分解,增加土壤团粒结构,加强土壤含养水分和抗旱能力;可以使作物的根系充分向下发展,在高度密植的情况下,发挥土壤深层水分和养分在增产上的作用;可 (1) Deep plowing is the center of technical measures for increasing agricultural output and a major revolution in the farming system. Soil through various degrees of deepening the topsoil, can promote soil weathering and decomposition of fertilizers; can speed up the activities of soil microorganisms, and promote the decomposition of organic matter, increase soil aggregate structure, enhance soil moisture and drought resistance; can make the crop roots Fully downward development, in the case of highly dense, play a deep role of soil moisture and nutrients in the increase;