How to prevent “four pests” after transplanting rape

There are many pests after transplanting rapeseed field, and there are mainly “four pests”, which are what farmers call “vegetable quail”, “caucasian cabbage worm”, “vegetable quail” and “black worm”. The "four insects" hazard prevention and control measures are described as follows: First, the vegetable borer: refers to the aphid that harms rapeseed, common carrot radish, Gan Lanjing and peach red peony. Three different dishes are often harmed together. The juice of rapeseed was sucked, the victim's leaf curled downwards, the plants turned yellow and dwarf, and the growth was not good. In severe cases, it could cause wilting and death. The second is the cabbage worm. It refers to the dish larvae that harm the rapeseed. The first instar larvae feed on the back of the leaf. The older larvae feed on the foliage, bite the oilseed rape into holes and nicks, and in severe cases only wins the petiole and veins. . Third, rapeseed meal: refers to the larvae of diamondback moth that harm rape, larvae often gnaw into the leaf tissue or stem from the back of the heart blade, often causing unintentional strains. The fourth is the black insects: refers to the harm of rapeseed leafhoppers, larvae are more concentrated in the leaf back and heart damage, the leaves eaten into holes and nicks, in severe cases, only the lower petiole and veins. The "four insects" prevention and control methods: 1, 40% omethoate food dish 800-1000 times liquid, or 50% anti-influx 10 grams of water 50 kg spray. 2, cabbage caterpillar, vegetable borer, black insect, available 90% crystal trichlorfon or 80% dichlorvos EC 800-1000 times spray, can also be used to kill 2.5% enemy agent, 2.5% time, 20% kill the chrysanthemum Mixed with fat, a total of 20 ml spray 60 kg of water. 3, the four pests are mostly backed by leaves and leaves, so pay attention to the leaves and the heart when spraying to enhance the effect.

Hot Pot Seasonings

Hot Pot Seasoning,Fish Hot Pot Seasoning,Hot Pot Bottom Material,Hot Pot Soup Base

Ningxia Ningyang Halal Food Co., Ltd. , http://www.ningyangfood.com