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一、预防措施(1)采用嫁接苗。据调查,同一温室内未嫁接植株的全株萎蔫率达10%以上,而嫁接植株只有1%左右。(2)适当浇水施肥。立春前,温室黄瓜易受寒流袭击,要少施氮肥,同时控制浇水,以免引起徒长。调查发现,徒长植株受冷、冻害较重。(3)熏烟防寒。在寒流来时,每隔2小时点一些秸秆发烟,可减轻冷、冻害。但熏烟量不
First, preventive measures (1) the use of grafted seedlings. According to the survey, the unvulcanized plants in the same greenhouse wilt rate of more than 10% of the whole plant, while grafted plants only about 1%. (2) appropriate watering and fertilization. Before spring, greenhouse cucumber vulnerable to the cold attack, less nitrogen fertilizer, while controlling the water, so as not to cause leggy. Survey found that legally grown plants cold, severe damage. (3) fumigation cold. In the cold, some straw smoke every 2 hours, can reduce cold and frost damage. But the amount of tobacco is not