The cultivation area of ​​the country, which is dominated by anti-seasonal horticultural products, has increased by more than 330 times in the past decade or so. The fruit and vegetables in greenhouses have produced high benefits for producers and greatly improved people’s quality of life. However, it should also be noted that at present, there are still problems in some places, such as greenhouses and fruits and vegetables, which are highly effective and highly harmful. Therefore, it is necessary to improve the methods of cultivation and use of pesticides in order to fully meet the requirements of green food for greenhouses and fruits and vegetables. of.
Fruits and vegetables of the same variety can be sold 3 times to 5 times more in winter greenhouses. In season, consumers eat fresh and out of stock. However, the cultivation of fruits and vegetables in greenhouses is far less effective than that of real estate. “Melon is not sweet, fruit is not fragrant, and food is tasteless†is a common feature. Therefore, some people prefer to eat the open vegetables from the south and the mainland and not eat the local shed vegetables.
Now, the production of edible green food has become the consensus of people. Green fruits (melon and vegetables) refer to the non-pollution, safe, and high-quality fruit products that have been certified by the China Green Food Development Center as permission to use green food labels. The key technology is to control the pollution of the environment, production, storage, transportation and processing links so that pesticide residues, harmful heavy metals, bacterial content and dust pollution in fruits and vegetables meet or meet the health standards for green fruits. These regulations include, for example, chemical plants, paper mills, sulphur plants, metal plants, cement plants, etc. in the upstream and upwind areas of fruit and vegetable production bases; mercury, lead, cadmium, chromium, arsenic, and chlorides in irrigation water. , fluoride and other heavy metals content should be less than 10,000; prohibit the use of nitrate-nitrogen fertilizer; a total ban on the use of highly toxic, highly toxic, high residue or carcinogenic, teratogenic, mutagenic pesticides, limiting the use of whole killing, easy Pesticides that produce high resistance to pests and that have made pests highly resistant; use of various genetically engineered microbial and hormonal agents are strictly controlled.
However, many of the current producers of greenhouse fruits and vegetables do not implement green fruit (vegetable) production technical regulations; distributors do not conduct residue testing; consumers lack health care knowledge.
Malformed tomatoes, yellow celery, odorless nectarines, seedless large grapes, rootless bean sprouts, etc., have all been caused by the use of a large number of hormones. After eating raw food, they have carcinogenic effects, but rarely cause people's attention. In greenhouses, high temperature, high humidity, poor light, disease is more severe than Datian, every 3 days -10 days must spray a disease-prevention agent. As soon as the medicine is consumed, the residue is heavier than the fruit and vegetables cultivated in the open field.
To develop pollution-free greenhouses, fruits and vegetables, the following measures should be taken:
Vigorously publicize the national strategy for implementing sustainable development; publicize the importance of protecting the environment, protecting the earth, protecting one's own health, benefiting future generations and not creating slanders, and improving people's awareness of the production and consumption of green food.
Implement market management systems such as the labeling of green fruit and vegetables sales, and the non-detection of fruits and vegetables that do not enter the market. Improve the science and technology content of greenhouse facilities and implement pest control network coverage technology as soon as possible.
Thoroughly reforming the greenhouse cultivation system for fruit and vegetables. Never use highly toxic, high residue or carcinogenic, teratogenic, and mutagenic pesticides and chemical hormones. Based on the protection of natural enemies and protection of ecological balance, the planting of greenhouses adheres to the use of mineral-origin pesticides, the systematic application of pesticides, biological pesticides, insect growth regulators, insect control, sex trapping, agricultural control, membrane network protection and other comprehensive measures. Gradually realize the cultivation of melon, fruit and vegetables with harmless pesticides.
Fully and strictly implement the fruit and vegetable residue detection system.
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