Control Efficiency of Kaoshanduoba Multifunctional Biological Agent against Greenhouse Cucumber Powdery Mildew

In this article,we studied the control efficiency of the multifunctional biological agent Kaoshanduoba,which was produced by Shandong Kaoshan Biological Technology Co.,Ltd.for fruits and vegetables,against greenhouse cucumber powdery mildew.The results showed that,spraying the agent promoted the growth of cucumber plants,and the leaf chlorophyll content and net photosynthetic rate of cucumber increased by 4.41% and 29.83% respectively.And after spraying the agent,the cucumber powdery mildew incidence decreased to 2.27%,and the control effect was significant.In addition,the cucumber yield increased by 13.16%,and the net income increased by 1 733.12 Yuan/667 m2.