石玉7号玉米喷施达尔丰效果研究

Study on Cultivation Technology of Spraying Daerfeng on Maize Cultivar Shiyu No.7

采用随机区组设计方法，研究了达尔丰喷施时期和喷施量对玉米产量和其它经济性状的影响。结果表明：玉米拔节期（8～9片叶）和大喇叭口期（12～13片叶）2次各用药450g／hm^2效果较好，既能降低株高和穗位，使根系发达，提高抗倒性，而又不影响产量。

By using randomized-block design of two factors, the effects of Daerfeng fertilizer and spraying date on maize yeild and other economic characteristics were studied. The results indicated that it was the best effect to spray Daerfeng 450 g/hm^2 in stock stage （8 - 9 leaves） and 450 g/hm^2 in ear stage （ 12 - 13 leaves） By these ways, plant hight and ear hight was decreased, roots were strengthened, but yeild was not affected.