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防治甘蔗螟虫,除了大力推广利用赤眼卵寄生蜂进行蔗螟的生物防治外,并根据广东甘蔗科学研究所的试验结果,进行了较大面积的利用氟铝酸钠(冰晶石)防治蔗螟,取得很大效果。我们的作法是这样的:当发现蔗田中出现螟虫卵块(约在4月上中旬,但要看具体条件而异)时,于清晨有露水时用纱布袋把粉剂氟铝酸钠撒施于蔗株上,每隔一周一次,由4~6月约共进行6~7次。初期用量为每亩2~3市斤,后期为
In addition to vigorously promoting the biological control of sugarcane borer using parasitoids of the Eichhornia crassipes, and according to the experimental results of the Guangdong Sugarcane Science Institute, a large area of sodium alginate (cryolite) is used to prevent and control the sugarcane borer , Made great effect. Our approach is this: When a stem borer is found in the cane field (about mid-April, depending on the specific conditions), use a gauze bag to apply the powder sodium aluminofluoride to cane in the morning when there is dew Strains, once every other week, from April to June about a total of 6 to 7 times. The initial dosage of 2 to 3 kg per mu, the late