Do you use laundry detergent when the leaves are insected?

The question is how do you eat after washing?

Summary. Dear, I'm glad to answer for you.

Let's start with your first question:

Washing clothes can kill green worms, but you need to match urea!

Because urea has the effect of destroying the chitin of the aphid body wall, the laundry detergent contains the surfactant sodium alkylbenzene sulfonate, which can dissolve the waxy layer of the aphid's body wall and attach to it to form an impermeable and impermeable film, causing the aphid stomata to be blocked and suffocated.

The preparation ratio of laundry detergent, urea and water is 1:3:300

Can laundry detergent kill vegetable insects, and you can eat vegetables a few days after killing insects.

Dear, I'm glad to answer for you. First of all, answer your first question: washing clothes can kill green worms, but you need to mix urea!

Because the liquid rolls for urine, the residue has the effect of destroying the chitin on the body wall of the aphid, and the laundry detergent contains the surfactant sodium alkylbenzene sulfonate, which can dissolve the waxy layer of the aphid's body wall and attach to it to form an impermeable and impermeable film, causing the aphid stomata to be blocked and suffocated. The ratio of laundry detergent, urea and water is 1:3

When preparing 300 meters, boil the laundry detergent with hot water, then add urea and water, and stir well. Foliar spraying is carried out after 125 grams of urea kilogram and neutral laundry detergent per mu are fully dissolved with 50 60 kg of water. It can control aphids, red head spiders, cabbage insects and other pests on grain, cotton, vegetables, fruit trees and other crops.

Spraying once every 7-8 days, spraying 3 times in a row, the control effect can reach about 95%, and it also plays a role in arguing top dressing. Precautions: Stir fully when preparation, and do not leave particles, which are easy to cause leaf burning.

Spraying should be even, be sure to spray the liquid on the aphids, otherwise it will not work.

The second problem is that the two mixtures can be eaten three to five days after the insects are eliminated, and it is recommended that the safety period be extended by five days.

Bugs also eat leafy vegetables in order to stay alive and reproduce. Diamondback moths feed on leafy vegetables.

Aphids: Aphids are the main pests that harm cabbage, and the aphid problem is most likely to occur in the early growth of autumn cabbage. The harm of aphids to cabbage is mainly manifested in sucking the juice of cabbage leaves or cabbage hearts, causing the leaves of Chinese cabbage to wither, deform, and unable to wrap normally.

Aphids not only suck the juice of cabbage, but also cause the decline of disease resistance of cabbage and induce coal stain disease. Some aphids can also carry germs that kill cabbage.

Cabbage moth: Cabbage moth is also one of the main insect pests that harm the normal growth of cabbage, and the cabbage moth is what we often call a small green worm. The larvae of the cabbage moth will eat the leaves of the cabbage, causing transparent holes in the leaves of the cabbage, which will cause a large area of cabbage yield to be reduced in severe cases.

The removal method of insect leaves is as follows:

Prepare a basin of water and put in some salt. The amount of salt should be put in proportion, not too much, not too little; Soak the leaves in salted water and take them out after 5-8 minutes. You can see the insects floating on the surface of the water; Wash the leaves thoroughly with clean water.

Place the leaves in a basin of clean water and float out the dirt.

Vegetable leaves have the cause of bugs

When the vegetables sprout and grow, some insect eggs in the soil will remain on the leaves of the vegetables, and there are many insects in the breeding period will lay their eggs on the vegetables, when the conditions are right, these insect eggs will mature and become insects, and the leaves will grow bigger and bigger. And so on, round after round of reproduction.

The seedlings of vegetables themselves are not up to standard, and they do not have good disease resistance, which makes it easy for insects to grow. Vegetables also need plenty of water, sunlight and fertilizer when they grow, and bugs may grow without adequate nutrition. Growing insects in vegetables may be caused by improper planting methods, resulting in a low output value of vegetables.

Vegetables

It refers to a kind of plant or fungus that can be cooked and cooked into food, and vegetables are one of the essential foods in people's daily diet. Although there are more than 20 families of vegetables commonly cultivated in China, some common species or varieties are mainly concentrated in 8 families. The species are divided into cruciferous flowers, green leaves, onions and garlic, etc., which are daily ingredients of people.

Bugs on the leaves can be washed off quickly, and the method is very simple, that is, soak the leaves in salt water. After soaking and touching the attack, you will see that the insects that were originally stuck to the vegetable leaves have floated into the water. Specific steps:

1. Prepare a basin of water and put some salt. The amount of salt should be put in proportion, not too much, not too little;

2. Soak the leaves in salted water and take them out after 5-8 minutes. You can see the insect laughing brother floating on the water.

3. Wash the vegetable leaves thoroughly with water. Place the leaves in a basin of clean water and float out the dirt.

1. Prepare a basin of water and put some salt. The amount of salt should be put in proportion, not too much, not too little; 2. Soak the leaves in salted water and take them out after 5-8 minutes.

You'll be able to see the bugs floating on the water. 3. Wash the vegetable leaves thoroughly with water. Place the leaves in a basin of clean water and float out the dirt.

How to get rid of cabbage leaf worms?