The acupoint fertilizing materials and medicaments are widely used in greenhouse vegetable production because they have a good root-building effect and can prevent root diseases. It is also because it is a routine measure, some vegetable farmers are very free to use, so the occurrence of seedling damage occurs from time to time in production. Recently, when the reporter interviewed Huanglou Town in Qingzhou City, he encountered the same situation again: Wang Yonglu, a vegetable farmer, killed dead trees for pepper and applied fungus fertilizer. He could burn roots with improper chili peppers, raise roots, promote roots, and prevent root diseases. Did not achieve, on the contrary also seriously affected the normal growth of seedlings ... ... summarizes the operation of farmers, the reporter believes that there are three inappropriate: First, the fertilizer or chemical applied directly after planting a hole in the planting vegetable seedlings, resulting in direct contact with the roots of fertilizer or pharmaceutical contact. The second is that the selected fertilizer or drug can not be applied. Third, the amount of one-time application is too large. In order to avoid the recurrence of the same problem, the reporter reminded the vegetable farmers that they must be cautious when using point fertilizers. First, the choice of fertilizer should be reasonable. Acupuncture points to choose biological bacteria fertilizer or bio-organic fertilizer, it is best not to choose compound fertilizers and other fertilizers, especially some strong or highly volatile fertilizer such as ammonium bicarbonate or ammonium and diammonium. Secondly, fertilize the fertilizer or chemical agent into the planting hole in advance before planting, and fully mix the fertilizer or chemical agent with the soil so as to avoid direct contact of the fertilizer or the agent with the root system, resulting in fertilizer damage or phytotoxicity. Once again, when the point fertilizers are brought into close contact with the root system, the application rate must be controlled well. Point fertilization material, under normal circumstances each hole into the amount of biological fungus fertilizer can be 30-50 grams; drugs such as Fumei Shuang mixed with carbendazim, 1 g per hole can be. In addition, if acupuncture is applied after acupuncture or medicine is applied once and then replanted, it is even less likely that there will be fertilizer or phytotoxicity.
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