Cold spring, cold and warm, coupled with easy to suffer the cold weather, so that the spring cucumber cucumber in the cultivation process often occurs in the base of the seedlings or grafted cucumber graft rot, flow plastic phenomenon, resulting in lack of cucumber seedlings broken ridge. After its occurrence was mainly affected by low temperature, low light and high humidity, the plants were filled with water and infected with bacteria. The main symptoms of damage are water-stained base of the stem, intact skin, internal decay, vascular bundles do not change color, and there is a gel-like flow out of the stem opening. Occurred in the lower part of the cucumber cotyledon grafting interface. Infectious diseases mainly include diseases such as blight and blight, and accompany with bacterial diseases. Its prevention measures are as follows: To prevent cold hazards: to ensure that the minimum temperature after grafting and seedling period is not lower than 13 °C, the temperature difference between day and night is about 15 °C; the ground temperature when planting is not lower than 15 °C. This basically can prevent stem rot of cucumber grafted. Irrigation of roots: Irrigation and rooting are used to prevent disease after seedling and after planting. Timely use of drugs to control the disease: After the occurrence of the disease, it is timely to use the pesticide compound that can be controlled by systemic absorption, fungi and bacteria to control. Effective formulas include: Streptomyces for agricultural streptomycin or endotolysin plus perfloxil or metalaxyl for spraying, 3 to 4 days once, and can be substantially cured by spraying twice; additionally 100 times 0.15% tetracycline The stemming effect is also very good. Hydrolyzed Sponge White Powder Sponge Chengdu Sino Tech company , https://www.cnherbfun.cn