原垄卡种对春大豆生长发育及产量的影响

Effects of Original Ridge Tillage on the Growth and Yield of Spring Soybean

在大田条件下系统地比较了大豆全生育期玉米茬原垄卡种大豆与大豆连作两种耕作方式下,叶面积、株高、干物质积累及产量上的差异。结果表明:由于玉米秸秆的存在,原垄卡种处理在大豆苗期生长缓慢,其叶面积、株高、干物质积累量较大豆连作处理低6.76%、27.78%、16%。随着后期原垄卡种处理大豆生长迅速,二者之间的差距逐渐缩小,鼓粒期原垄卡种处理叶面积、干物质积累量超过大豆连作处理、二者株高相同。至成熟期原垄卡种处理的干物质积累量较大豆连作处理高7.6%,前者较后者增产9%。

This study systematically compared the differences of soybean leaf area, plant height, dry matter accumulation and yield with the two farming methods of intercroping maize and soybean and soybean continuous cropping in the whole growth pe- riod. The result showed the intereroping soybean grew slowly in seedling period due to the presence of corn stalks. Its leaf area, plant height, dry matter accumulation respectively decreased 6.76% , 27.78% , 16% comparing with soybean continuous cropping treatment. As the the intercroping soybean developed rapidly in late stage, the gap between the two treatments was gradually reduced. Leaf area, dry matter accumulation of intercropping maize and soybean treatment were higher than soybean continuous cropping treatment, the heights of the above two treatments were the same in the filling period. The dry matter accu- mulation of intercropping maize and soybean treatment was higher than soybean continuous cropping treatment of 7. 6% in the mature period. The yield of intercropping maize and soybean treatment was higher than soybean continuous cropping treatment of 9%.