Comprehensive Prevention and Control Techniques of Vegetable Liriomyza in Greenhouse in Summer and Autumn Festival
The summer and autumn seasons are the peak period for all kinds of crop damage caused by Liriomyza infestation. The worms overlap from generation to generation and have mixed feeding habits, mainly affecting vegetables such as legumes, crucifers and Solanaceae cucurbits. It has become an important pest that harms vegetables and other crops in Qianxi County. With the continuous increase of vegetable planting area in Qianxi County, the host plants are abundant and the number of insect sources is large. The occurrence and harm of Liriomyza is increasingly serious. At the same time, the control of the pest mainly relies on chemical control. The farmers in the production increase the amount of medication and increase the number of medications to control the damage of the pest and accelerate the development of its resistance. Intensified, Liriomyza has become a major factor that restricts the development of vegetables in western Yunnan. The comprehensive prevention and control measures are as follows: I. Agricultural control 1. Adjust the sowing and transplanting period and cut off the source of transition foods, which can effectively reduce the damage. 2, after the harvest of vegetables, timely removal of debris in the field and concentrated destruction, reduce the source of insects. Timely plowing the soil, appropriate irrigation, increase soil moisture, reduce the emergence rate. 3. In the peak period of the occurrence of Liriomyza spp., combined with field management, removal of pests and leaves and central destruction. 4. The occurrence of severe crop damage and damage to sensitive crops such as broad bean crops, etc., to attract concentrated damage and control by spraying, can significantly reduce the damage to the main crops, and reduce the amount of pesticides used in the main crops. . Second, physical control 1. Yellow plate trapping: In the peak period of adult pests, the yellowing of the yellow spot was used to trap adult insects in the field. 2. Insect nets are installed at the entrance and vent of greenhouses, which can block the entry of insects to a certain extent. Third, chemical prevention Chemical control can achieve better results in the prevention and control of chemicals before the occurrence of peaks. The control of adult worms should be carried out before the dew dew occurs in the morning. The control is conducted before the larvae are 2 years old. When the leaves have larvae in the esophagus or leaves, the first Secondary chemical control. Can choose 70% Liriomyza erythraea wettable powder 2500 times, 90% bar 1.8% avermectin (Abadin, Eforden, Involucin) EC 2000 times liquid interval 7-10 days, even prevention 2-3 times. China Extract Powder For Use As Dietary Supplement Extract Powder, Extract Powder Manufacturer Shaanxi Kang New Pharmaceutical co., Ltd. , https://www.apipepdites.com