Other Temperature /Measuring instruments Household Portable Electronic Scale,Hanging Digital Crane Scale,Electronic Digital Display Vernier Caliper,Digital Depth Vernier Caliper Chengdu Augus Science Technology Co., Ltd. , https://www.vluckyaugus.com
1. Chinese cabbage downy mildew. The lesions are polygonal or irregular, and the corresponding parts have white frosty hair on the back. The control agent is ethyl phosphorus aluminum, 1258 grams per acre or 75 grams per acre of metalaxyl. It becomes a sticky slip, and the outer leaves often wilted to reveal the leaf ball.
2. Chinese cabbage soft rot. After the soft tissue is infested, it is water-stained and translucent, and has a foul smell. The diseased tissue becomes a sticky slippery paste, and the outer leaves often expose the leaf ball. The disease can damage dozens of vegetables and can continue to spread and infect in the field. The control agent is agromycin, 100 kg of water per packet, or 70 times of 70% dikesone.
3. Chinese cabbage black spot and anthracnose. Black spot disease is light brown to dark brown, surrounded by halo, black mold on the lesion. On the diseased leaves infected by cabbage anthracnose, the lesions are white round dots, and the lesions on the petiole are mostly prismatic and light brown with a reddish sticky substance. The agent that can be used to control these two diseases is 125 grams per mu of mancozeb, or 75 grams of carbendazim per acre, and sprayed 2-3 times.
4, cabbage virus disease. The symptoms of the disease are leaf shrinkage, malformation, mosaic, plant-shaped dwarf, veins are transparent, the leaves are often curved to one side, the leaves are uneven, the green is the same, and sometimes there are a lot of ring-shaped dead spots on the leaves. In the prevention and treatment, it is mainly necessary to cure the seedlings. 40% dimethoate and vinegar can be sprayed in water at a ratio of 1:1:1500.
5, aphids. There are mainly vegetables, tuberculosis and peach aphid, the damaged leaves are curled, the vegetable plants are seriously dehydrated, the plant shape is dwarfed, the aphids can also spread the virus, causing cabbage virus disease, and can be added with 40% dimethoate and vinegar (1:1:1500) ) Spray control.
6, Spodoptera litura. The newly hatched larvae of the larvae feed on the back of the leaves, leaving only the epidermis and veins; after 3 years of age, they are scattered and harmful. When they are serious, they can eat light leaves and even bite the delicate vegetable poles. After 5 years of age, they can eat the fruits. The agent used for the control has 40% acephate, 150 g per mu, or 20% to sweep 50 g.
7, yellow strips of worms. The larvae have roots and wheat husks at 3-4 cm in the soil. Adults like to eat young tissue. The leaves are often bitten into many small holes. You can use 85g of trichlorfon per mus of 85g, or 2.5% of the enemy to kill the emulsifiable concentrate of 25g per acre.
Main diseases and insect pests of autumn vegetables and their control
Autumn is a season of frequent crops and diseases such as vegetables. The main methods for controlling pests and diseases and their chemical control methods are as follows:
ã€Comment】 ã€Print this article】 ã€Close this page】 ã€Large, medium and small】