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一、大棚蔬菜病虫害防治药剂使用情况 喷洒农药是大棚蔬菜病虫害防治中的主要手段,但要选择高效、低毒、低残留农药,对症下药,按照农药标签说明使用浓度及间隔期交替用药。自行加大剂量及连续多次使用同一种药剂防治病虫害,易导致该病虫害对农药产生抗药性。如速克灵杀菌剂,原是防治蔬菜灰霉病的特效药,由于连续多年使用,病菌对速克灵产生了抗药性,防治灰霉病的效果显著下降。对灰霉病病菌产生抗性的杀菌剂还有
First, the use of greenhouse pest control pesticides Spraying pesticide is the main method of pest control in greenhouse vegetable, but to choose efficient, low toxicity, low residual pesticides, the right medicine, according to the pesticide labeling instructions using the concentration and interval of alternating medication. Increase their own doses and continuous use of the same agent for many times to control pests and diseases, pests and diseases easily lead to pesticide resistance. Such as speed Ke Ling fungicides, the original is the cure Botrytis cinerea medicine, as a result of continuous use for many years, the bacteria on the speed Keling produced resistance, the effect of prevention and control of gray mold decreased significantly. There are also fungicides that are resistant to Botrytis cinerea