First, the high-temperature stuffy shed on the stubble crops after the harvest does not remove stubble, the greenhouse closed for 7-10 days, so that the greenhouse temperature in the sunny up to 60 °C -70 °C, pending treatment and then remove the shed within the residual strain, both labor Efforts will be made to prevent insects from spreading to the ground. 2. Cover insect nets Set up insect nets at the vents of protected areas in autumn and spring to prevent insects from being exchanged between exposed grounds and sheds. Third, hunt yellow worms to trap yellow insects to set up yellow plates in the protected area, and always maintain the yellow plate's hanging height at 20 cm above the crop growth point, and maintain the yellow plate's adhesiveness, which can receive very good results. Fourth, when the amount of pesticides used to control the occurrence of spotted flies, adults are smoked and killed with fenvalerate, and they should be used 2-3 times. For Liriomyza sativae and Liriomyza sativae, efficient and low-toxicity insecticides can be sprayed on the front side of the leaves, and if it is the Liriomyza huidobrensis, it must be sprayed on both sides of the leaves. Specific agents include 3000 times of diflubenzuron and 2500 times of insomnia.
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