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用新梢减重法对黑盾守瓜为害龙眼嫩梢的防治指标进行测定。试验结果表明,该虫的成虫危害紫红色嫩梢的防治指标为4头/梢。
Using the new shoot weight loss method to black shield Shougua longan tender tips prevention and treatment indicators were determined. The test results show that adults of insect pest purple tender tip control indicators for 4 / shoots.