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蔬菜生产中的一类重要病害就是土传病害,而土传病害发生其中的一个重要原因是温室大棚蔬菜种植的连作。温室大棚的生产中,土地与外界的相对隔绝以及土地生产周期长等引发的“连作障碍”现象是最为突出的。土壤中有害物质的增加、土壤中有害微生物的增加及土传病害急剧增长致使植株不能正常生长发育,造成蔬菜减产甚至绝收。轮作倒茬是解决土传病害的主要措施。
One of the most important diseases in vegetable production is soil-borne disease, and soil-borne diseases are one of the important reasons for the continuous cultivation of vegetables in greenhouse. The phenomenon of “continuous cropping obstacle” caused by the relative isolation of land and the outside world and the long period of land production in the production of greenhouse can be most prominent. The increase of harmful substances in the soil, the increase of harmful microorganisms in the soil and the sharp increase of soil-borne diseases result in the plants unable to grow and develop normally, resulting in the decrease of vegetables or even the absolute yield of vegetables. Crop rotation is the main measure to solve soil-borne diseases.