Green vegetables are not pesticides, what other ways can prevent insects?

These pests are a necessary guarantee for high yields of green vegetables. In particular, cabbage, radish, cabbage and other large green leafy vegetables are the favorite food of cabbage insects, and if they are not stopped in time, cabbage insects can even gnaw the whole vegetable leaves. At present, the most commonly used control method is to spray the drug, taking into account the 70 centimeters, erect and branched, the flowering period is April, and the fruiting period is May.

Green cabbage is native to Asia and is currently widely cultivated in the north and south of China, mainly in the Yangtze River Basin. The young leaves of green vegetables are edible and are also a favorite food for pests.

<> then what other way to eat cabbage besides using pesticides, but every year my mother only starts to plant it after winter, and she can usually eat cabbage or cabbage from her garden in winter or early spring. I don't understand why other seasons are not suitable for growing cabbage or cabbage. My mother said no, saying that only in the cold temperatures of winter can green vegetables taste tender and juicy, and are an ideal ingredient for many pests.

It is also a group with a high incidence of insects, how to kill and expel insects without using pesticides, in fact, there are many soil methods in rural areas that can be done, some plants themselves contain toxins, and the production of soil pesticides is the key to the current life, diet, everyone advocates green pollution-free and pollution-free food, we have this idea, there is this awareness, in fact, it is still good. However, if you want to kill the vegetables without pesticides when you plant a large area, it is almost the first thing to choose a variety of vegetables that have fewer insects.

For example, lettuce, cabbage, spinach, penny, summer water spinach, kraft cabbage and other green vegetables, rarely attract insects to eat, these vegetables are just when the seedlings emerge, aphids eat quickly, spray pesticides appropriately, and will not use drugs later, and there are few insects. Vegetables, cauliflower and other vegetables, if no pesticides are used during planting, it will not take long for the leaves of vegetables to be covered with many insect eyes, now many people advocate green planting, no pesticides and no chemical fertilizers, so what should be done to make vegetables not grow insects under the premise of not using pesticides?

We should spray some vinegar because vinegar is also effective in preventing pests and diseases, and it can also increase the yield of green vegetables.

According to the survey, among the birds inhabiting in China, most of the gray magpies and woodpeckers are beneficial birds that prey on pests, which play a huge role in controlling the harm of fruit tree pests. In or around the orchard, insects can be treated by hanging artificial nests to protect and attract beneficial birds. It can also take advantage of the habit of chickens and ducks pecking at insects such as green worms, caterpillars, and beetles, and carry out free-range breeding in orchards to control the occurrence of insect pests.

You can put some plant ash on top of the greens, and the plant ash also has the effect of preventing insects, which will automatically keep the insects away from the greens.

There are ways to kill vegetable insects without pesticides:

1. Chop 1 whole garlic ball and 1 small onion into a puree, then add about 10ml of chili powder and 1000ml of water to mix, soak for 1 hour and filter to remove the residue, add 10ml of concentrated soap and mix evenly, and then spray.

2. Put the shredded tobacco in a container, pour water and soak for a day. Then use a watering can to spray directly on the insects, which is lethal to some aphids or cabbage insects.

3. Pound the ginger into a puree, add 20 times of water and soak for 12 hours, and spray with filtrate after filtration to control a variety of vegetable insects.

4. Sprinkle a layer of plant ash on the vegetable seedlings, an appropriate amount can be, otherwise the vegetable seedlings will be burned to death, and the plant ash has an obvious killing effect on some aphids. Grass ash is not only a good insecticide, but also an organic fertilizer with high utilization value.

Deworm with physical methods.

Shi Yan, a doctoral student at the School of Agriculture and Rural Development of Chinese University, said that the most headache for planting organic vegetables is to remove insects, and the prevention and control of insect pests should all be done in a physical way, such as placing fluorescent insect repellent lamps and insect trapping sugar tanks, and also planting peppers, green onions and other insect repellent vegetables and kale and other insects that are easy to attract insects.

The production cost of organic crops is high, mainly due to the high cost of organic fertilizers, labor costs, pest risks and lack of large-scale operation. Yan Xiaohui said that the number of crops harvested using organic cultivation methods for the same vegetable varieties was lower than that of non-organic production methods at the beginning, and even after a few years of organic production, the yield was at most the same as that of non-organic production methods.

Pesticides in a narrow sense are chemical pesticides, but pesticides in a broad sense are not only organic compounds, it can also be biological or natural plants. For example: BT Bacillus thuringiensis, Beauveria bassiana, Metaverium aeruginosa, etc. (commercially available).

In addition to the preparation of these fungal species, organic vegetables can also be used: azadirachtin, rotenone, etc., which are allowed to be used.

Of course, there are many ways to get rid of insects in organic vegetables, in addition to spraying, you can also use manual capture, physical black light to attract insects, plant insect repellent plants, crop rotation and so on. However, it depends on the specific situation.

If you want to learn more about the pest control of organic vegetables, we can continue**, hehe, I hope some of the above information can help you! o(∩_o~~

Organic vegetables can not use pesticides, biological pest control technology can be used!

It can be controlled by organisms, such as the natural enemies of pests, viruses of pests, inducers to induce pests, confuse pests, etc.

Cabbage does not use pesticides usually use the following four soil methods to control cabbage pests: the longest use is to sprinkle ash (plant ash) on the leaves after the cabbage insects, which can play a good role in the prevention and control of aphids, cabbage insects and other pests, and the principle of action is that the fine particles formed after the ash is dispersed can block the stomata of pests, thereby killing pests. Grass ash will not hurt cabbage leaves, but if the amount is too large, the attachment time is too long will affect the photosynthesis of the leaves and affect the growth rate of cabbage, so when using plant ash to prevent and control cabbage diseases, sprinkle a thin layer, it is best to sprinkle the day before the rain, so that the residual plant ash can be washed off in time through rainfall.

Then there is cabbage and these aromatic vegetables interplanting, which can play a role in reducing insect pests, such as: cabbage interplanting celery, which can significantly reduce the occurrence of thrips; Intercropping of cabbage with onion and garlic can effectively reduce the damage of aphids and red spiders. There are also including garlic, onion, mugwort and other plants of the stems and leaves and other organs in the solution formed after soaking or cooking, contains the components that can kill pests, by spraying this kind of plant leaching solution can also play a role in killing cabbage pests, with this insecticidal effect of the plant more, the methods commonly used include:

After mashing the onion and garlic, add 25 times the water and stir well to mix well, and take the supernatant to spray the cabbage leaves after stationing, which can effectively kill aphids, red spiders, scale insects and other pests; Take green mugwort leaves, pound them and boil them in boiling water that is 10 times the volume for 30 minutes, and spray them with supernatant, which can effectively control pests such as cabbage worms and aphids; Take the fresh stinky Tsubaki leaves and mash them, add 3 times the volume of water, boil for 30 minutes and then stand still for 3 days, take the supernatant and dilute 40 times and spray the cabbage leaves, which can effectively control cabbage insects and aphids. There are also similar insecticidal effects of Zanthoxylum pepper leaves, Zanthoxylum bungeanum pepper, ginkgo biloba, honey locust, etc. The above is the insect control method of cabbage without pesticides, I hope it can be used for reference.