Control of insect pest grubs on scallions

Green onion, is a kind of onion, onion belongs to the lily family, is the stem and leaf of perennial herbaceous plant onion, the upper part is green onion leaf, the lower part is white onion. It can be divided into four types: common scallions, shallots, scallions and scallions. Zhangqiu in Shandong Province is the largest green onion planting, processing and export base in China, and now it mainly grows Japanese green onions. Spring onions taste pungent, slightly warm in nature, and have the function of releasing Yang, detoxifying and seasoning. Mainly used for cold, cold and fever, headache and nasal congestion, cold and abdominal pain, dysentery diarrhea, internal obstruction of insect accumulation, obstruction of milk, adverse stool and so on. Spring onion contains volatile oil, which is mainly composed of allicin, dienyl sulfide and calcium oxalate. In addition, it also contains fat, sugar, carotene, vitamin B, C, nicotinic acid, calcium, magnesium, iron and other ingredients.

Green onion is beneficial to lung and yang, perspiration, hemostasis, pain and other diseases such as dysentery, abdominal pain, arthritis, constipation and so on. Spring onions have a unique spicy taste, derived from volatile sulfide onion, which can stimulate saliva and gastric juice secretion and increase appetite. The malic acid and sugar phosphate contained in spring onions can excite nerves, improve circulation, relieve surface and clear heat. Eating spring onions regularly can reduce the accumulation of cholesterol on the walls of blood vessels.

With the nutritional effect, can not be said in a few words, it can be said that the dietary therapeutic effect of green onions is a lot. Eat scallions or chives three times a week, can be fried, cold food, can also be used as a seasoning, can achieve the role of invigorating yang and tonifying yin. Strengthening Yang and tonifying Yin: various vitamins in green onions can not only ensure the normal secretion of human hormones, but also effectively stimulate sexual desire, so as to "strengthen yang and tonify yin".

Detoxification seasoning: green onions taste pungent, sexual lukewarm, with the role of publishing Tongyang, detoxification and seasoning. It is mainly used for cold, cold and abdominal pain, cold and fever, headache and nasal congestion, obstruction of milk, adverse defecation and so on. Spring onion contains volatile oil, the main component of the oil is allicin, but also contains diallyl sulfide, calcium oxalate. In addition, it also contains fat, sugars, carotene, vitamins, niacin, calcium, magnesium, iron and other ingredients.

Sweating bacteriostasis: scallions can stimulate the sweat glands of the body to achieve the effect of perspiration and heat dissipation; onion oil can stimulate the upper respiratory tract and make sticky sputum easy to cough up. Allicin in spring onions has obvious effect on resisting bacteria and viruses, especially on Shigella dysenteriae and skin fungi.

Cancer prevention: the pectin contained in chives can significantly reduce the incidence of colon cancer and has an anticancer effect. Allicin in onions can also inhibit the growth of cancer cells; onions also contain trace element selenium, which can reduce the content of nitrite in gastric juice and play a certain role in the prevention of gastric cancer and many kinds of cancers.

Control of insect pest grubs on scallions

Grub is an important underground pest. The head is big, brown, yellow and a few black, so farmers call it a big head worm. The body is smooth and wrinkled, generally white, has feet, and can also crawl, but it has the nature of false death. When it moves, it will be rolled into a "C" shape, commonly known as the white silkworm. It lives exclusively in the soil and harms the underground parts of plants. Grubs are the larvae of beetles, which mainly occur in North China black beetles and copper beetles, so grubs are a mixed population. Beetles are unearthed from June to August every year to lay eggs, because most grubs survive more years, so they accumulate for many years, and there is a damage peak in autumn. When the temperature is as low as 8 degrees in winter, the grubs dive into the depths of the ground and rise again next spring.

In the face of serious insect pests, comprehensive measures should be taken to control grubs:

1. Set up insecticidal lights in the centralized planting area, turn on the lights at night from June to August, trap and kill beetles and reduce the number of eggs laid.

2. Scallions turn deep into the ground after harvest and mechanically kill part of the grubs.

3. Medication: 48% Lesbon EC 500 ml per mu, or phoxim. Due to the long residual time of 48% Lesbon in the soil, it has a good control effect on underground pests. Can be mixed with medicine soil sprinkled along the ridge, and then watered, can also be irrigated into the soil with water. Note: the use of highly toxic methamidophos, 1605 and so on is strictly prohibited.