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在40%高氯·马乳油对甘蓝地的菜青虫田间试验、生产示范试验获得成功的基础上,于2005年6月再次选择贵阳市花溪区甘蓝地的菜青虫进行田间小区防治试验及50 hm2以1∶2500倍液的较大面积防治示范试验(留下10%的面积作为不施药剂的空白对照),为大面积推广防治菜青虫提供科学依据。1
On the basis of the success of 40% high chlorinol horseradish oil on cabbage field cabbage in cabbage field and the successful production demonstration experiment, we chose the cabbage caterpillar of cabbage field in Huaxi District of Guiyang City in June 2005 to conduct field control and 50 hm2 A large area of 1:2500 times the liquid control pilot demonstration (leaving 10% of the area as a non-application of the blank control), for large-scale promotion of prevention and treatment Pieris rapae provide a scientific basis. 1