In crop production, pesticides are impossible or lacking, but the problem of pesticide residues has caused headaches for farmers. I want to completely remove pesticide residues, unless there is no pesticide. I think many people here think that this is heaven and night, in fact, life. There are many plants that can also act as “pesticides”. Let's learn together.

First, the fresh grass of Artemisia

Instructions:

Chop it, add 10 times of water, cook for 30 minutes, spray after cooling, can control cotton aphid, red spider, cabbage caterpillar.

Second, arborvitae leaves

Instructions:

1. Crush it, add the same amount of water, squeeze out the original solution, and add water twice to spray, which can control cotton aphid and aphids.

2, the arborvitae leaves 10 times the water immersion liquid, the effect on the prevention and control of wheat rust is significant.

Third, nettle leaves

Instructions:

1. Grind the dried ramie leaves into fine powder, mix it with a certain proportion of soil and apply it to the ground to control underground pests such as cockroaches, crickets and tigers.

2, according to 1 kg of ramie leaf powder plus water 16 ~ 20 kg soaked, with a kettle infusion, can cure onions, leeks, garlic, radish, cabbage cellar, cabbage caterpillar, carnivorous mites and so on.

3, the nettle leaf powder is made into a liquid, sprinkled into the toilet, pig pens, pits, etc., has a significant effect on killing mosquito larvae and maggots.

4. Pinus massoniana

Instructions:

1. Use 5 kg of masson pine and 5 kg of boiling water, and soak for 2 hours in a closed bath to prevent and control rice leafhopper and rice planthopper.

2, 30 times the water infusion of pine needles, can inhibit the spore germination of potato immune disease.

Five, weeping willow leaves

Smash it, add water 3 times soak for 1 day or cook for 30 minutes, filter and spray, can control cabbage caterpillars, mites, mites and so on. 5 times water infusion of willow leaves can inhibit wheat rust.

Six, mulberry leaves

Instructions:

1. Add 5 times of water, boil it into a stock solution, add 2 kg of water per 0.5 kg of stock solution, or spray 10 times of water spray on mulberry leaves to control cotton aphid and red spider.

2, 15 times water immersion liquid of mulberry leaves can inhibit the germination of wheat rust pathogens.

Seven, garlic stems and leaves

principle:

Allicin contained in garlic can reduce the occurrence of pests and diseases and reduce the number of spraying drugs.

Instructions:

1. Put the chopped garlic leaves and stems into the field before ploughing, and prevent and cure the insects for a longer period of time and the effect is better.

2. Cut the stems of the garlic head into 6~7 cm sections and sprinkle them in the early rice fields to make them rot.

The above are several plants that can act as pesticides. To learn more about pesticides, please pay attention to the Chinese pesticide network.

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