Control of diseases and insect pests of Panax notoginseng

1. The disease 1.1 Black spot mostly occurred in the high temperature and humid season from June to July, which caused the plant to break and die. The prevention and control method is to adjust the transmittance of the shade to less than 20%, and spray with 1.5% more than 150 times of antimycin or 700% chlorothalonil wettable powder 600 times 800 times. 1.2 Blight is a destructive disease in the seedling stage of Panax notoginseng. Most of them occur from June to July, harming leaves and petioles. The prevention and control method is to strengthen the field management, reduce the temperature and humidity, remove the remains in time, burn them centrally, and spray them with 65% Dysen zinc wettable powder 500 times. 1.3 Rhizoctonia solani mostly occurs in the season of high humidity and low temperature from April to May, which harms the base of seedlings. The method of prevention and control is to irrigate the root with 500 times 800 times of 70% dimethazone wettable powder and spray. 1.4 Root rot is the main root disease of Panax notoginseng. Most of them occur from late April to early July. The control method is to irrigate the root with 58% Ruidu wettable powder or 50% carbendazim wettable powder 300 × 500 times. two。 Insect pest 2.1 slugs (slugs) are controlled by spraying lime powder on the border in the evening on a sunny day. 2.2 the control method of red spider is to spray 1000 times of dimethoate EC. 2.3 the control method of small ground tiger is to use 90% crystal trichlorfon mixed with poison bait or 1000-1500 times liquid to irrigate.