Study on the Effect of Chemical Control Mechanism of Mai Yefeng on Wheat

With spray of Mai Yefeng onto the leaves of wheat at its shooting period, the number of ears and their grains decrease as the consistency increases. The leaf praying can also effectively shorten the joint length and improve the collapse resistant capacity; while it has no effect on the height of wheat. With the use of primary type at 375～750 ml/hm 2, the yield can be increased by 6.8%～11.2%; while the use of the new type at 375 ml/hm 2 can increase the yield by 14.2%. The test of seed dressing with Mai Yefeng shows that it hinders the emergence and lower the plant height and adversely affects the yield but increases the dry weight of wheat's main organs if the consistency is high.