According to experts, farm households need to grasp the following five technical links when fertilizing shed vegetables. First, farmyard fertilizers must be matured. Without being cooked, farmyard manure contains pathogens and eggs that are easily transmitted to vegetables. In addition, if the farmhouse fertilizer is put into a greenhouse and then decomposed, the resulting ammonia easily burns the seedlings. Therefore, the farmyard fertilizer should be fully decomposed outside the shed and then fertilized. Second, the fertilization method should be scientific and reasonable. Basal fertilizer is best applied one week before the colonization of vegetables, and it should be mixed well with the soil. Top dressing can be applied at a distance of 7-10 cm from the plant or chasing. After the topdressing, cover the soil and water in a timely manner. Do not spread the fertilizer directly on the ground or the plants so as to avoid evaporation of the fertilizer and burn the vegetable seedlings. The top-dressing fertilizers should be selected at the peak of the period when the vegetables need the fertilizer and the late growth of the vegetables. It is best to choose to do it on cloudy days or in the evening. Spray the fertilizer solution on the back of the new leaves and leaves as much as possible to facilitate the absorption of vegetables. Third, the amount of chemical fertilizer should be appropriate. Since fertilizers in greenhouses are not easily lost, excessive application of chemical fertilizers can cause an increase in the concentration of salts in the soil, which can affect the normal growth of vegetables and cause secondary salinization. Therefore, fertilization before fertilization, formula fertilization must not be blindly applied. Fourth, the application of trace fertilizer should be appropriate. Although the demand for micronutrient fertilizers on vegetables is small, it plays a significant role in the metabolism of vegetables. The commonly used micronutrients include boron, molybdenum, zinc, and iron fertilizers. Micro-fertilizer is used as base fertilizer and can also be used for seed dressing, soaking or top dressing. Since the range between the appropriate amount and the excess amount of the micro-fertilizer is relatively narrow, the amount must be accurate to avoid causing fertilizer damage. The fifth is to use plant growth regulators properly. The use of good plant growth regulators will promote the production of vegetables. However, there are certain conditions and scopes for each kind of regulator in the application. In particular, it is necessary to master the time and concentration of use, and you can not careless, otherwise you can not achieve the effect of vegetable production increase.
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"Five Elements" of Fertilizing Vegetables
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