玉米三类苗叶面喷施尿素、磷酸二氢钾效果初报

The Preliminary Report on Effect of Spraying CO(NH_2)_2+KH_2PO_4 on the Leaf of Low_vigor Seedlings

在玉米苗期对三类苗进行叶面喷施1 % 尿素+ 0-1 % 磷酸二氢钾,可以使83-5% 三类苗生长为正常株。此法作业简单,容易操作,是防止三类苗、提高玉米田间植株整齐度、降低小穗株率的有效措施。

This paper reported that 1%CO(NH 2) 2+0 1%KH 2PO 4 solution was sprayed on the leaf of low_vigor seedlings in the seedling stage and 83 5%“Three kinds seedling of maize” were improved to be the normal seedling.The procedure was simple and available to operate,and prevented low_vigor seedlings from emerging,and improved field plant tidiness of maize,and reduced the rate of smaller ear of maize.