Chinese cabbage slug is the main disease of Chinese cabbage, how to prevent and control Chinese cabb

Generally, we use insecticidal lamps to trap and kill. Or with water, wine, vinegar, sugar. The ratio is ten to one to three to six.

Add a small amount of trichloride. Place in a bowl and stir well. Then put the cabbage in the field at night.

But to go over the top of the cabbage. If there are too many bugs. It is necessary to quickly spray pesticides to solve the problem of pest control from the source, and when selecting varieties, we must choose varieties resistant to diseases and insects; When sowing Chinese cabbage, it is necessary to remove weeds in the field, and at the same time concentrate on the prevention and control of various diseases and pests left over from the previous vegetables; For some plots where insect infestation occurs more severely.

The disease resistance of varieties is regional, and should be selected according to local conditions. Strengthen field management: according to the local climatic conditions and variety characteristics, late sowing at the appropriate time, try to miss the rainy season, reduce the rain on the seedlings, so that the susceptible stage of the heart stage can avoid the rainy season can be squeezed into juice with peppers, leeks, greens, melons and vines in accordance with 1:

5 proportions to spray insecticide, this is called taking from nature and returning to nature.

Soft rot: occurs from the rosette stage to the core-wrapping stage. Control measures: as far as possible, choose the fields of wheat, rice, and leguminous crops to plant cabbage, and avoid planting cabbage with Solanaceae.

Melons and other cruciferous flowers.

vegetable continuous cropping; Turning the ground as soon as possible to promote the decomposition of diseased and disabled bodies; It can be sprayed with biological agent 3% pyrethrin microcapsule suspension 45 ml per mu. Control cabbage worm and beet armyworm.

and diamondback moth, using the phototaxis of pests, set up a frequency vibration insecticidal lamp or black light in the field every 40-50 acres to trap and kill insects.

In addition, the color patterns on the backs of several species of Spodoptera exigua larvae have their own characteristics, such as the inverted figure-eight pattern of Spodoptera exigua.

The nearly half-moon or triangular shape of Spodoptera litura.

Black spot, 6 white longitudinal lines of Spodoptera exigua, each throttle of Spodoptera exigua.

Round white patches on the upper posterior.

It is beneficial to identify the leaf-eating pests on their Chinese cabbage, when the larvae eat the leaves of the cabbage, and eat the cabbage heart and rhizome of the cabbage, resulting in direct death of the seedlings, or the cabbage does not have a positive heart, affecting the tillering and core of the cabbage, and the secretion of the pest seriously pollutes the leaves.

Pesticides should be sprayed because they can cure the disease, and fertilizers should be applied to increase yields.

In autumn or after the vegetable harvest, plough the soil in time, so that some adults and larvae are exposed to the ground and freeze to death or pecked by natural enemies, and the eggs are exposed to the sun and burst. In the growing season, pay attention to cleaning the garden, timely tillage, weeding, ditching and draining, and keep the vegetable soil dry. Sprinkle quicklime belts or tea withered powder on the edge of the vegetable ditch, the head of the field and between the rows, and about 5 7 quicklime per mu.

Pesticides. Because my family has been growing Chinese cabbage for more than ten years, I have been sprayed with pesticides every year, and I have never been bothered by slugs, so I should use pesticides to prevent and control them.

It can be harmful at all growth stages, mainly to the leaves. Onset at seedling stage: white mold layer appears on the back of cotyledons, and seedlings die in severe cases.

Onset of adult plants: gray-white, pale yellow lesions with inconspicuous edges appear on the front of the leaves, and then expand into yellow-brown lesions, which are polygonal or irregular due to the restriction of leaf veins, and dense white mold layer on the back of the leaves. When there are many diseased spots, they are connected to each other, so that the diseased leaves die locally or the whole leaf.

Control methods Sow seeds at the appropriate time, and plant sparsely appropriately; Morning seedlings, late seedlings, moderate squatting seedlings; Frequent irrigation of small water, timely drainage after rain; apply plantar fertilizer, increase phosphorus and potassium fertilizer to enhance seedling potential; Remove the sick body and take it out of the concentration for deep burial or burning.

Seed treatment: Flurobacterium nail cream suspension seed coating agent and 25% methamanine wettable powder can be used to dress seeds according to the weight of seeds. In the early stage of the disease, the following agents can be used for prevention and treatment: zinc propylany; Dysenium, or fluoromycete downy mildewcarb.

Soft rot may occur, generally emitting a foul smell, there will be foliar wilting, you need to pay attention to watering, choose the right medicine for use.

Chinese cabbage downy mildew, or some diseases such as insects, need to remove weeds on time, pay attention to the selection of varieties, so that better control.

What diseases are there in cabbage now, we should be specific.

Common pests and diseases of Chinese cabbage mainly include: downy mildew, soft rot, virus disease, root swelling disease, anthracnose, black rot, black spot, aphid, yellow-striped jumping beetle, cabbage borer, diamondback moth, cabbage worm, etc. Chinese cabbage is prone to downy mildew, anthracnose, virus disease, etc. in the growth, and can be sprayed with pesticides such as Radidomir, leaf spot, carbendazim, etc.