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前期打底叶蚜虫上得慢当高粱已长出7～8片叶,底叶已见蚜虫时组织人力进行剪叶。要逐垅逐棵找,找得净、查得清。把布满有蚜虫的叶子剪掉(在叶根处留一小段)拿出田外埋掉。乐果药剂配小灰防虫效果好,省工又省药把小灰筛好,1斤乐果乳剂兑1斤水,拌40斤小灰。配的时候把少量小灰倒到药水里,然后再倒到称好的小灰中,拌匀,每亩用量3～4斤。配完的药灰
Pre-bottom leaf aphids on the slow when sorghum has grown 7 to 8 leaves, the bottom leaf has been seen when a man-made aphids cut leaves. To find one by one, find the net, check clear. Cut off the leaves covered with aphids (leave a short section at the root of the leaves) and bury them in the fields. Dimethoate medicaments with small gray pest control effect, provincial workers and medicine to small gray sieve, 1 kg dimethoate against 1 kg of water, mix 40 pounds of small gray. With a small amount of small gray down to the syrup, and then pour it to the good little ash, mix well, the amount of 3 to 4 pounds per acre. With finished gray