Control methods of ground maggots infested by Chinese cabbage

Chinese cabbage evolved from brassica. Chromosome number 2n=2x=20. Every 100g fresh vegetables contain 93-95g moisture, 2.3-3.2g carbohydrates, 1.4-2.5g protein, vitamin C30-40mg, 0.6-1.4g cellulose, and other vitamins and minerals. Chinese cabbage, Brassica napus of Cruciferae, originated in northern China, is a traditional vegetable in China. Chinese cabbage was first called song, but Isatis indigotica is not exactly today's cabbage. Modern cabbage is generally divided into Chinese cabbage and Chinese cabbage. Northerners generally call Chinese cabbage "cabbage" and Chinese cabbage is called "rape". The cultivated area and consumption of Chinese cabbage ranks first among all kinds of vegetables in China.

Nutritional value of Chinese cabbage

Cabbage contains B vitamins, vitamin C, calcium, iron, phosphorus, and the content of trace element zinc in cabbage is also very high. Traditional Chinese medicine believes that cabbage is slightly cold and non-toxic, and it has the effects of nourishing stomach, nourishing stomach, relieving thirst, diuresis, clearing heat and detoxification. [4]

Cabbage is also rich in crude fiber, which can not only play a role in moistening the intestines, but also promote detoxification, stimulate gastrointestinal peristalsis, promote stool discharge, and improve people with poor digestion. Often eat some cabbage, can also play a good role in preventing bowel cancer.

Eating cabbage regularly can also prevent breast cancer. Cabbage contains trace elements that can help break down the androgens associated with breast cancer. Hormone researchers in New York also show that eating cabbage often can prevent the occurrence of breast cancer.

Eating cabbage can supplement calcium. Chinese cabbage is rich in calcium, containing milligrams of calcium per gram. A cup of cooked cabbage juice can provide almost as much calcium as a glass of milk. Some people don't like drinking milk and can get a lot of calcium by eating enough Chinese cabbage. Eat cabbage to nourish your face and protect your skin. Chinese cabbage has high water content and low calories. The air is dry in winter, and the cold wind does great damage to people's skin. Cabbage is rich in vitamins c and e. Eating more cabbage can have good skin care and beauty consequences.

Eating cabbage can prevent cancer. Scientists at the New York hormone Research Institute in the United States have found that the breast cancer rate of Chinese and Japanese women is much lower than that of Western women because they often eat cabbage. There are some trace elements in cabbage, which can help break down estrogen associated with breast cancer. Cabbage also contains trace molybdenum, which can control the production of nitrite amine in the human body and play a certain role in cancer prevention. Eat cabbage to moisturize the intestines and relieve defecation. Cabbage is rich in dietary fiber, which can play a role in moisturizing the intestines and defecating. For people who get angry easily, eating more Chinese cabbage can clear the fire.

Control methods of ground maggots infested by Chinese cabbage

In the process of cabbage growth, the most taboo ground maggots (also known as root maggots) bite on the epidermis of the root of Chinese cabbage, causing bacteria in the soil to take advantage of it, causing Chinese cabbage to rot, which not only reduces the yield of Chinese cabbage, but also affects the edible value of Chinese cabbage. If it is not controlled in time, the whole field will be damaged and serious losses will be caused to vegetable farmers. The maggot that harms autumn cabbage is the larva of radish fly and is an oligophagous pest, mainly harming cruciferous vegetables such as Chinese cabbage and radish. Next, let's introduce the control methods of insect pests and maggots in Chinese cabbage.

1. Before planting Chinese cabbage, 2.5-3.5 kg phoxim granules per mu can be mixed with chemical fertilizer and applied to the soil, which can kill the eggs and larvae of seed flies.

2. Use 0.5 kg of sugar, 1 kg of vinegar, 7.5 kg of water, plus 20 grams of trichlorfon powder to make the mixture. Around the first ten days of August, dig a bowl of pits every 8-10 meters in the field, put them into a plastic bag according to the size of the pits, pour in 100 grams of the mixture, and add the mixture every 10 days or so, which can kill a large number of adults.

3. When Chinese cabbage grows to 2-3 true leaves, or 2.5% trichlorfon powder 1-1.5 kg per mu, or 0.5-1 kg dimethoate powder per mu, field ground powder is sprayed to prevent seed flies from entering the field to lay eggs.

4. When Chinese cabbage grows to 6-8 leaves, plant ash, lime powder and 2.5% trichlorfon powder can be mixed at 2:1:1 and sprinkled around the vegetable root to prevent seed flies from laying eggs and kill the larvae before entering the soil.

5. When it is found that Chinese cabbage in the field is damaged by root maggots, 90% crystal trichlorfon 1000 times, or 40% dimethoate EC 1500 times, or 50% phoxim EC 2000 times can be used to irrigate the roots, each plant is about 200g, so that the solution flows from the heart of Chinese cabbage to the rhizosphere to ensure that the root soil is moist. Generally, the maggots can be killed by filling the roots 1-2 times.

6. about 30 days after cabbage planting, use 1 kg of ammonia and 1 kg of clear water, stir evenly and irrigate the roots, about 150-200 grams per plant. Or combined with autumn cabbage irrigation, ammonia water will be slowly poured into the running water for furrow irrigation, which can not only prevent the occurrence of maggots, but also play the role of topdressing.