First, can not arbitrarily change the light receiving room angle The greenhouses are suitable for the local lighting point of view, the solar greenhouse north-south span, height, direction and back slope angle do not arbitrarily change.
Second, can not be planted too deep now most of the melon farmers use grafted seedlings for production, grafted cucumber seedlings is to resist disease, if the colonization too deep, cucumber seedlings will produce reproductive roots, loss of grafting, grafted disease prevention purposes.
Third, can not concentrate on fertilizing all kinds of chemical fertilizers, especially nitrogen fertilizers, in the high temperature and humidity will produce a lot of harmful gases, such as concentrated application in the planting ditch, will cause burning root dead seedlings.
Fourth, can not be a large number of nitrogen fertilizer due to nitrogen fertilizer in the water decomposition process will cause a significant drop in water temperature, promote the ground temperature decreased, affecting the normal growth of cucumber pods.
Fifth, can not be applied without compost organic fertilizer Organic fertilizer will quickly ferment in the high temperature, produce a lot of ammonia in the fermentation process, can cause poisoning of cucumber seedlings in the greenhouse.
Sixth, can not spray at noon, afternoon spray the temperature in the greenhouse at high temperatures, leaf moisture transpiration fast, the drug has not been absorbed on the sun, especially manganese and zinc drugs, but also easy to cause injury. Spraying in the evening happens to be the opposite of noon, because after the spraying, it is not completely absorbed by the cucumber leaves, it will be decomposed due to moisture, and the treatment effect will be greatly reduced, and the occurrence of diseases will be aggravated due to the increase in the humidity of the spraying.
VII. Can't fall short and fall too short The one-time fall and short will cause the leaves to suffer from light reduction, which will affect the normal growth of the melon.
Eight, can not be cultivated with the same crop in the greenhouse in the process of growth and development, plants and roots will produce some secretions, have mutual inhibition of growth and development. If tomatoes and cucumbers are cultivated in the same greenhouse, their growth and development will be severely inhibited, and both the yield and quality of both will be reduced. Cucumbers and tomatoes are extremely vulnerable to locusts. Once a locust occurs in one crop, another crop will naturally occur, so they cannot be planted in the shed.
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