马铃薯、蚕豆间作对二者根系的影响

Effects on the Roots of Potato and Broad Bean on the Condition of Intercropping

对马铃薯蚕豆间作与单作下两种作物的根系进行研究.结果表明,马铃薯与蚕豆间作可以增加马铃薯和蚕豆的根干重和根系活力,但对根含水量影响不大.马铃薯与蚕豆间作、单作的根干重和根系活力随着生育进程的进行不断增加,到蚕豆结荚期达到最大.在0～80 cm土层中,土层越深、根系干重越小,在40～60 cm土层中根含水率最高、根系活力最强.

In potato/beans conditions, we mainly studied the spatial distribution and variation of potato and bean root number and activity, main results ： intereropping ,to some extent, promotes the formation of roots at the seedling stage , with the advance of growing stages , the amount of both root and root weight density was followed a law of small-big-small; Root quantity and weight density in the vertical soil is reveal itself by the type of ＂T＂ distribution; the roots moisture content of the vertical space is low in the shallow soil layer and high in the deep, and, with the growth of propulsion, goes a down- ward trend; root activity showed a decreased trend, and the high point of root activity goes downward.