Qingyuan vegetable farmers should strengthen the prevention and treatment of diseases in the late stage of vegetable growth, directly reduce the number of pathogenic bacteria, and after the harvest of each stubble vegetable, thoroughly remove the residual branches and leaves of the field. For vegetables that are susceptible to root diseases, the residual roots should be removed. The purpose of deep ploughing is to destroy the living environment of the germs. Generally, it is required to plough 40 cm deep after each harvest. With the help of natural conditions, such as low temperature and ultraviolet rays, some of the germs are killed. Disinfection During the summer vegetable stubble gap, after deep ploughing, irrigate enough water, cover with plastic film for high temperature disinfection, so that the maximum temperature of the soil layer 10 cm reaches 70 ℃, can kill a large number of germs, this is a simple and effective prevention and control method. Reasonable rotation rotation can not only improve the stress resistance of the crop itself, but also make the pathogens hidden in the ground reduce or lose the infection ability after a certain period of time. There are two types of vegetable rotation: one is the rotation between vegetables and vegetables, and it is required to determine the interval between the cultivation of similar vegetables according to the survival time of the pathogens in the soil; the other is the rotation between vegetables and food crops. Disclaimer: Some articles of this website are transferred from the Internet. If the legal rights of third parties are involved, please inform this website for processing. phone Greenhouse Film Electric Roll Up The Greenhouse Film Manual Roll Up Unit can roll up a length of 60-80 meter, running stably with fine out side looking and long time of usage. The inside drive gears are made of high quality steel with fine workmanship, and what is more, there is lubricating bearing assembled on the out put and input shaft. At the meantime, there is also a group of reverse gear added to it. All these make the unit to be light and easy for Greenhouse Film Electric Roll Up,Roll Up Curtain Greenhouse,Greenhouse Film Vent Roller,Greenhouse Roll Up Motor JIANGSU SKYPLAN GREENHOUSE TECHNOLOGY CO.,LTD , https://www.alibabagreenhouse.com