The rising temperature in summer has made vegetables usher in the most vigorous growth stage of the year. However, there is no doubt that during the growth of vegetables, the higher the temperature is, the better the vegetables will grow. When the temperature is too high, the growth of vegetables will be inhibited by the temperature. For our province, the outside temperature in most parts of the province rises to the highest level of the same year in the late summer and early autumn. Sometimes the outdoor temperature will exceed 40°C, and such temperatures are extremely inappropriate for most fruit vegetables. Vegetables grow. However, if it is possible to use the summer high temperature period, recuperate the land on which the vegetables are planted, and carry out the “high-temperature mousse sterilizing in the greenhouse†of the vegetable facilities, it can have a multiplier effect.
When it comes to the pollution-free production technology of vegetables, with the increasing popularity of specific use technologies, specific technological steps such as "two-wire and one-mode coverage" technology and "Xiong Feng pollination" technology have become more and more popular. accept. The use of “two-mesh and one-film coverage†can solve the problems of ventilation and temperature reduction and pest and disease transmission, so as to realize the worm-free and disease-free interior of the shed. "Bumblebee pollination technology" can solve the problem of hormone treatment of flower spray flowers, so as to achieve high quality and high yield of vegetables.
However, if the problem of vegetable cultivars is caused by continuous cropping or soil-borne diseases in the soil, which will affect the sustainable development of the production of pollution-free vegetables, then another important issue in the integrated production technology of vegetable pollution-free production is needed. Measures - "high temperature stuffy shed" to play a role. It is also one of the key technologies to ensure the production of vegetables without pollution.
The principle of high temperature stuffy shed
The high-temperature stuffy shed is based on the combined effects of three major heat energy generated by sunlight heat storage, biogenic heat generation, and chemical heat release. Through the boring treatment, the soil above 20 cm in the plough layer forms a sustained high temperature of 40° C. or above, killing large Some harmful fungi, bacteria, and some pathogenic microorganisms, such as viruses, suffocated most of the underground pests and killed some of the weeds, resulting in good ecological control.
Target effect
Summer high temperature stuffy shed measures can solve various vegetable production problems caused by continuous cropping obstacles. It has a very significant effect on prevention and cure of vernal disease such as verticillium wilt of greenhouse, wilt of cucumber tomato, and bacterial wilt of sweet pepper, and the control rate can reach more than 80%.
best time
High-temperature stuffy shed measures are conducted from early July to late August. It is the maintenance and disinfection of the land within the facility during the period when the high temperature season in summer is not conducive to the growth of vegetables.
Specific operation method
After the end of the production of vegetables in the shed, remove the crop residues. Keep the scaffolds intact and the sheds intact. Combine wheat straw, rice straw, corn stalks, etc. into a 3 to 5 centimeter long section by using an instrument. Mix chicken manure or pig manure, cow dung and other manure with the required amount of manure, and apply evenly to the shed. Rotate the soil surface and level it. Then irrigated into the shed to see the ground water. The floor of the shed is covered with a layer of plastic film, and the entire booth and various vents are sealed. Using the greenhouse effect in the greenhouse to maintain a high temperature and humidity state, and ensure that it can last for more than 15 days, can achieve good efficacy of insecticidal sterilization. High-quality high-temperature stuffy sheds can lay the foundation for continuous production of greenhouses.
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