Clear Garden. After the harvest of vegetables, many pathogens attached to the vegetable stumps scattered on the field, it entered the soil, becoming the source of infestation of the mandible vegetables. Therefore, vegetable farmers should strengthen disease prevention and control at the later stage of vegetable growth, directly reduce the base number of the source of the drug, and after each harvest of vegetables, completely remove the leaves and leaves of the field, and also remove the roots of vegetables that are susceptible to root diseases. Deep plowing. The purpose of deep plowing is to destroy the living environment of the germs. It is generally required to plow 40 cm deep after each harvest to kill some soil-borne pathogens by natural conditions such as low temperature and solar ultraviolet radiation. disinfection. In the summer, the vegetables are changed in the gap. After deep ploughing, sufficient water is poured and covered with a plastic film for high temperature sterilization. The highest temperature of 10 cm at the soil layer can reach 70°C, which can kill a large number of germs. This is a simple and effective control method. . Rotation. A reasonable rotation can not only improve the stress resistance of the vegetables, but also enable the pathogens hidden in the ground to greatly reduce or lose their infectivity after a certain period of time. There are two types of vegetable rotations: one is the rotation between vegetables and vegetables. It is required to determine the interval between the cultivation of similar vegetables based on the survival time of pathogens in the soil; the second is the rotation between vegetables and food crops, such as vegetables and The effect of water and dry crop rotation between rice will be better. Change soil. For some facilities, such as greenhouses, which are relatively fixed, small in variety and large in investment and high in efficiency, they can be used to control soil-borne diseases. Change the top layer of top soil and add it with nontoxic topsoil. grafting. For some serious soil-borne diseases, high-resistance or immune rootstock grafting can control the harm of soil-borne diseases. Such as watermelon grafted on the gourd, cucumber grafted on the black-skinned squash, can completely solve the hazards of withering and other diseases. Disposable Latex Gloves,Disposable Vinyl Gloves,Nitrile Glove,Latex Glove ZHANGJIAGANG DINSHENGLIN TRADING CO.,LTD , https://www.dslhouse.com