First, the ring fertilizer must be fully decomposed when the greenhouse vegetables are applied to the farmyard manure. Because there are no pathogens and eggs in the mature farmyard fertilizer, it is easy to spread the disease after being applied to the vegetables. In addition, if the farmyard manure is placed in a greenhouse and then decomposed, ammonia burning seedlings will be produced. Therefore, the farmyard manure should be fully fermented before fertilization.
Second, the fertilization method should be scientifically based on the application of vegetables a week before planting, and should be mixed with the soil evenly. Topdressing can be carried out in a ditch or a hole at a distance of 7-10 cm from the plant. After topdressing, it is necessary to cover the soil and water it in time. Do not spread the fertilizer directly on the ground or plants to prevent the fertilizer from volatilizing or burning vegetable seedlings. The top dressing should be carried out at the peak of the fertilizer required for vegetables and in the later stage of vegetable growth. It is best to choose it on a cloudy or evening day. Spray the fertilizer on the back of the new leaves and leaves as much as possible to facilitate the absorption of the vegetables.
Third, the application of chemical fertilizers should be appropriate because the fertilizer in the greenhouse is not easy to lose, so excessive application of chemical fertilizers can cause the increase of salt concentration in the soil, which will affect the normal growth of vegetables, and the secondary salinization of the soil. Therefore, fertilization should be carried out before fertilization, and formula fertilization should not be applied blindly.
Fourth, the application of micro-fertilizer to the road trace element fertilizer on the demand for vegetables is small, but its role in vegetable metabolism is very large. Currently used micro-fertilizers include boron, molybdenum, zinc, iron fertilizer, and the like. Micro-fertilizer is used as a base fertilizer, and can also be used for seed dressing, soaking seeds or top dressing. The range between the amount of micro-fertilizer and the excess is relatively narrow, so the dosage must be accurate to avoid causing damage.
Fifth, the use of hormones should be used with caution, plant growth regulators, will promote the growth of vegetables. However, each type of regulator has certain conditions and scopes in application. In particular, it is necessary to master the time and concentration of use, and it is not sloppy, otherwise the effect of increasing the yield of vegetables cannot be achieved.
Second, the fertilization method should be scientifically based on the application of vegetables a week before planting, and should be mixed with the soil evenly. Topdressing can be carried out in a ditch or a hole at a distance of 7-10 cm from the plant. After topdressing, it is necessary to cover the soil and water it in time. Do not spread the fertilizer directly on the ground or plants to prevent the fertilizer from volatilizing or burning vegetable seedlings. The top dressing should be carried out at the peak of the fertilizer required for vegetables and in the later stage of vegetable growth. It is best to choose it on a cloudy or evening day. Spray the fertilizer on the back of the new leaves and leaves as much as possible to facilitate the absorption of the vegetables.
Third, the application of chemical fertilizers should be appropriate because the fertilizer in the greenhouse is not easy to lose, so excessive application of chemical fertilizers can cause the increase of salt concentration in the soil, which will affect the normal growth of vegetables, and the secondary salinization of the soil. Therefore, fertilization should be carried out before fertilization, and formula fertilization should not be applied blindly.
Fourth, the application of micro-fertilizer to the road trace element fertilizer on the demand for vegetables is small, but its role in vegetable metabolism is very large. Currently used micro-fertilizers include boron, molybdenum, zinc, iron fertilizer, and the like. Micro-fertilizer is used as a base fertilizer, and can also be used for seed dressing, soaking seeds or top dressing. The range between the amount of micro-fertilizer and the excess is relatively narrow, so the dosage must be accurate to avoid causing damage.
Fifth, the use of hormones should be used with caution, plant growth regulators, will promote the growth of vegetables. However, each type of regulator has certain conditions and scopes in application. In particular, it is necessary to master the time and concentration of use, and it is not sloppy, otherwise the effect of increasing the yield of vegetables cannot be achieved.
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