摘要
1982～1987年在春旱严重的半干旱地区进行免翻留槎沟种玉米的试验和示范,结果表明:在春旱严重的半干旱地区免翻留槎沟种玉米,旱年能比垄台种平均提高0—40cm土层水分含量0.6～2.2%,提高玉米出苗率10.5％。留槎沟种玉米经中耕破原垄,覆土形成的新垄体比台种垄体降低0—20cm土层容重0.14g/cm^3,增强了土壤蓄水保水能力,也有利于玉米根系的生长,促进了玉米植株的生长发育和抗旱力,使玉米产量提高31.26%。
The experiment and demonstration of notill stubbled ditch planting corn was conducted in the serious spring drought semiarid areas in the years 1982—1987.Results show that in the severe spring drought semiarid areas,corn planted by notill stubbled ditch can raise 0.6—2.2% of moisture content in 0—40 cm soil layer, and 10.5% of corn seedling emerge on the average in the dry years as compared with ridge and furrow cultivation. Stubbled ditch cultivation of corn can lower 0.14g/cm of bulk dcnsity of 0—20cm soil layer through breaking the original ridges to form new ones as compared with ridge cultivation, thus, increasing soil ability to store and conserve water, being favourable to corn root system development, and promoting the development and drought resistance of corn plants so as to raise 31.26% of corn yields.
出处
《干旱地区农业研究》
CSCD
北大核心
1989年第4期25-29,共5页
Agricultural Research in the Arid Areas
