Effects of Combined Application of Silicon and Fungicide on Leaf Metabolism,Yield and Stem Rot Control of Maize
The Fenghe 96 ♀ was selected as the object,the effects of coating with 40％fludioxonil·pydiflume-tofen(B),sprayed silicon fertilizer(Si)and 10％metconazole(Y)on leaf metabolism control effect and yield of maize stalk rot were studied.The results showed that treatment BY10Si had the highest net photosynthetic rate,transpira-tion rate and chlorophyll content of 19.80 μmol/(m2·s),4.10 mmol/(m2·s)and 62.68,respectively,which increased by 32.9％,25.8％and 17.8％over the control.The disease index of BY15Si was the lowest and the prevention effect was the highest(47.2％).BY10Si treated with the highest 100 grain weight and panicle weight(34.56 g and 136.33 g,respectively)had the highest yield(11 247.45 kg/ha),which was 20.0％higher than CK,and both of them were signif-icantly different from CK.Maize coated with 40％fludioxonil·pydiflumetofen before seeding,sprayed soluble silicon and metconazole twice in the growing season of corn could effectively reduce the incidence of maize stem rot,,and increase the photosynthetic rate,100-grain weight and the yield of maize at the same time.
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