Due to the growth of planting years in the protected areas and the prevalence of the phenomenon of heavy flooding, the greenhouse soil has been seriously deteriorated, and many devastating diseases have appeared in large numbers. For example, well-known nematodes and plant dead trees have caused harm to many vegetable farmers. From the current situation, vegetable farmers are in urgent need of an efficient agricultural measure to salvage this situation. Many vegetable farmers have dealt with rootworms and soil-borne diseases, but the effect is not good. Because of this measure, there is a great limitation in the scope of prevention and control. In addition, nematodes and soil-borne diseases have very strong invasiveness. As a result, ideal control effects cannot be achieved. To eradicate soil hazards, we must start with the essence and work hard on soil treatment. So what's a good idea? Now let Senior Agricultural Artist of Shandong Shouguang Agricultural Bureau and Wang Zhongchun, a well-known vegetable plant protection expert, introduce the high-temperature shed to this efficient method: The high-temperature shed is a simple and effective agricultural prevention measure that can start from the nature of soil. Fundamentally solve the problem so as to achieve ideal control effect. However, high-temperature sheds must pay attention to methods, and cannot simply heat up the membranes, but must also cooperate with certain measures. Here we need the material: lime nitrogen (calcium cyanide), wheat bran, in order to ensure the ideal high-temperature effect, we also need to replace the old film of the new film. Specific operations can be divided into six steps: 1. Clean the pastoral. Remove weeds, stubble and waste from the shed. 2. Deeply to the ground. Wheat bran (1000-2000 kg per acre) is spread on the ground, and then lime nitrogen (50-80 kg per acre) is evenly spread in the shed. After the completion, 20 cm deep plowing is performed, and wheat bran and lime nitrogen are all used. Press under the earth. 3. Cover the film. Rising and covering the mulch. The function of the plastic film is to prevent the effective gas leakage after the reaction of lime nitrogen and water; the second is to avoid evaporation of a large amount of water vapor and reduce the effect of high temperature. 4. Irrigation under the membrane. There are two effects: One of the calcium cyanamides reacts chemically with water to produce an effective gas. The second is to activate the nematodes and soil-borne pathogens in the soil so as to achieve better control effects. 5. Cover the new film. Close all air outlets, cover the film for 10 to 15 days, of which at least 5 days of exposure time, so that the temperature inside the shed up to 80 degrees Celsius, the ground temperature up to 60 degrees Celsius. 6. Remove the film and plastic film. 20 days after the removal of the plastic film, transplanting is carried out. Since calcium cyanamide has a certain content of nitrogen and calcium, and it can kill nematodes and soil-borne pathogens in soil, calcium cyanamide has the effect of double effect of medicinal fertilizer, and this method is more effective than other fumigants. The method is relatively simple and inexpensive, so it is worthwhile to popularize the high-temperature shed method with lime nitrogen and wheat bran. It is now a time to change the soil in the greenhouses. In order to ensure the production of
Vegetables and strive for high economic benefits, the majority of vegetable farmers may wish to try the above methods.
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