What are the methods to control zucchini aphids?

Because aphids breed and spread more efficiently, it is important to apply agriculture and animal husbandry. Physics, organic chemistry, microorganisms and other ways to achieve comprehensive control.

The key is to clean up the pastoral scenery, cultivate disease-free seedlings, spray yellow plates, repel aphids, microbial control, pesticide control, etc. The sprayer needs to be delicate, and the key is the back of the leaf and the heart leaf when spraying.

Generally, drugs with the functions of contact killing, internal absorption, fumigation and so on are used. It is not necessary to use the same type of pesticide or type of pesticide on a permanent basis. During the course of taking the drug, it is necessary to ensure the safety observation period of the insecticide.

When fumigating the drug, it is necessary to pay attention to the external temperature standard, and it is best to decide the fumigation time on the day to prevent fertilizer damage to the main stem.

Agricultural and animal husbandry prevention and control, stubble change time, properly dispose of residual plants and leaves. According to the effective adjustment of the main stem, the yellow leaves are reasonably removed, the yellow is withered, and the diseased leaves and diseased plants are immediately removed. Physics control pre-seedling period according to shade nets and other countermeasures to prevent aphid damage, once found, should be immediately sprayed for control.

You can take advantage of the yellowing growth habit of aphids, set up plywood or thick cardboard with a length of 1 meter and a width of 1 meter in the field, and first rub a layer of orange or yellow paint to <>

After drying, apply a layer of sticky yellow car oil made of No. 10 car oil and a small amount of yellow glycerin, set 32 34 pieces per 667 square meters, and apply car oil by hand once every 7 10 days. dark gray aphid repellent and road surface covering with dark gray plastic film; On the shed around the greenhouse, pull 1 or 2 silver-gray film hanging strips parallel to the floor.

Microbial control can use parasitic wasps that release floating insects and aphids, and parasites to prevent aphids. Fumigation can be used for organic chemical control. When aphids are first found in the shed, 300 350 grams of 22% insecticidal double smoke can be used for every 667 square meters, divided into 4 5 places, and the closed greenhouse is ignited by a dark fire for 3 hours to carry out fumigation.

Spraying can be done with 40% dimethoate EC 1000 2000 times liquid, <>

or deltamethrin EC 2000 3000 times, or 10% acetamiprid wettable 2000 3000 times, or 10% bifenthrin EC 3000 4000 times, or 50% octathion EC 1000 times, or acetamiprid 20% EC 2000 2500 times, or high-efficiency cyfluthrin EC 1200 1500 times, or 10% cypermethrin EC 1200 1600 times, or 10% cis-cypermethrin EC 4000 8000 timesAt the beginning of the emergence of aphids, sprayers are used to control 2 or 3 times.

Agricultural control, physical control, chemical control, pesticide control, management control, etc., can be used, and these methods can be reasonably controlled.

When planting, we must choose the soil is relatively fertile and broad, and we must use farmhouse fertilizer when fertilizing, do not use the fertilizer bought outside, and often water the plants, but also to prevent the occurrence of pests and diseases, if there is a situation of small insects, then we must spray insecticides in time.

Some pesticides should be sprayed regularly, and then the right medicine should be prescribed, pay attention to the proportion and composition of pesticides, and should pay attention to the amount of pesticides to avoid excessive use of pesticides.

Whiteflies, red spiders, leaf miner flies are very common, to buy some pesticides to spray on the leaves of zucchini, more watering and more fertilization, can play a preventive role.

Botrytis cinerea, cotton rot, rot, silver leaf disease, soft rot, leaf blight, powdery mildew are some of the diseases that zucchini is particularly prone to.

The best role of crops is to elongate the plant roots, so that the plant roots maintain a good growth, promote the absorption of soil nutrients by plants, and thus achieve the effect of increasing yield and income The author is slightly familiar with the southern fruit trees, and the following is used as a starting point to talk about the part that needs to be paid attention to in the role of calcium on fruit trees. The effect of calcium on fruit trees Calcium can maintain the stability of cell wall, cell membrane and membrane-bound proteins, and has a positive effect on maintaining peel toughness and preventing fruit cracking.

The most effective way to control zucchini pests and diseases is before planting. The whole plot is subject to pest control, soil sterilization, and insecticide. Before planting, sterilize and insecticide the seedlings. Dealing with these problems before transplanting is the most effective way to control pests and diseases. Way.

The gourd grower did not understand the close connection between the leaves and the gourd, so he didn't care if there were aphids on the leaves, and he didn't listen to the neighbors' persuasions. Since Chenhongna did not implement measures, there were more and more aphids on the leaves, resulting in the gourds falling and finally not getting the gourds.

From the text. The reasons can be seen in the third and fourth natural paragraphs:

A neighbor saw it and said to him, "Don't just stare at the gourd, the leaf pie has an aphid, cure it!" The man felt very strange and said, "What?".Do you still need to treat the insects on the leaves? I want a gourd. ”