(1) Mulching with film-covered cultivation combined with plastic film can avoid volatilization of fertilizer solution and residual fertilizer on the ground and prevent vegetable poisoning.
(2) The use of less volatile or less volatile fertilizers for ground fertigation within the protection of the ventilation area is relatively small, it is easy to accumulate harmful gases, the occurrence of harmful gas poisoning phenomenon, it is not appropriate to use volatile fertilizer for ground flushing Moonba.
(3) Fertilizer Fertilizer Fertilizer Fertilizer Fertilizer Fertilizer Fertilizer Fertilizer Fertilizer Fertilizer Fertilizer Fertilizer Fertilizer Fertilizer Fertilizer Fertilizer Fertilizer Fertilizer If the amount of fertilizer is insufficient, if the fertilizer concentration is too low, the fertilizer efficiency will be poor, and the effect due to fertilizer will not be achieved. If the fertilizer is excessively large, or if the amount of water used for fertilizer application is insufficient, the concentration of fertilizer solution is too high, then the burned root is prone to occur. . For volatile fertilizers, when the concentration of fertilizer solution is too high, the amount of harmful gases that volatilize into the air is relatively increased, and the chance of harmful gas poisoning also increases.
Generally speaking, when watering with the normal amount of water, the fertilization amount of the solid fertilizer can be fertilized at about 120% of the conventional surface fertilization amount. The fertilization amount of the liquid fertilizer is preferably slightly turbid after the fertilizer liquid is mixed into the water. .
(4) To reduce the residual amount of fertilizer on the ground, try to use some fertilizers with better water-solubility for flushing and fertilization. When using organic fertilizers for fertilization, use the supernatant of the mash for fertilization. When fertilizing with some easily volatile fertilizers, appropriate amounts of water should be applied again after fertilization to further dilute the fertilizer on the ground.
(5) The amount of water should be suitable for fertilization and fertilization Fertilization should not be flooded to avoid or reduce the loss of nutrients in fertilizers. However, it is also not possible to use too little water, to prevent fertilizers from excessively high concentrations of fertilizers, and to cause surface salinization after long-term high-level fertilization. The specific watering amount should be determined according to the type of soil, the type of cultivated earthworms, and the cultivation period of the vegetables. The appropriate amount of water for watering, the water can wet the soil in the main distribution area of ​​the root. After watering, insert a wooden stick into the ground to check the wetness of the soil to determine the appropriate amount of water.
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