The reason why cucumbers sometimes produce phytotoxicity, from the point of view of pest control measures, first, misuse of pesticides that are not correct, the second is the application of excessive pesticide concentrations or repeated application of the same pesticide, the third is high temperature or high humidity application time. Drugs, the fourth is that the soil application is not uniform enough.

First of all, we must create a good cultivation environment. First, according to the cucumber's fertility habits, fine soil preparation, so that its roots and strong seedlings; Second, to open a good ditch, easy irrigation and drainage; Third, layered cover film, easy to adjust the temperature and humidity control; Fourth, balanced fertilization, promote steady growth; To avoid repetition, practice rotation. After the change of cultivation environment, the probability of occurrence of pests and diseases has been relatively reduced, and the number of pesticides applied has also been reduced accordingly.

Second, it is necessary to distinguish the situation and apply medicine to cure injury. In addition to severe drug injury is difficult to lift the cucumber, the occurrence of moderate or mild injury can generally be alleviated by fertilization, application. One is the occurrence of scorch or shrinkage after applying leaves on the edge of the leaves. You can apply Huimanfeng or Zhuangfuxing active liquid fertilizer to spray at a concentration of 1:500 to 800 times. Since the liquid fertilizer contains activated substance “KOM”, pesticides can be released. Residual poison can make cucumber grow faster. The second reason is that when the application of slow-growing plant growth regulators is too high to inhibit the growth of cucumbers, they can be sprayed with 30 to 50 ml/kg of gibberellic acid or 2000 times of plant growth promoter “802”; When the degree of wilting, 0.01% ~ 0.02% of brassinolide can be applied twice. The fourth is that when the blades are twisted and sag, they can be sprayed with a 1:100-fold aqueous solution of white sugar, which can relieve the phytotoxicity quickly.

Third, we must start prevention and enhance cucumber resistance. Increase the use of mature farm manures or plant-based commodity organic fertilizers, or bio-organic compound fertilizers as base fertilizers, vigorously optimize the soil environment, increase the ability of cucumbers to supply fertilizers and water, suppress germs, repel pests, and reduce drug damage.

YT-T13

YT-T13

YT-T13

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