Protected vegetables use fertilizers

The conditions for planting vegetables in protected areas are special. The following problems should be noted when using chemical fertilizers:

1. Use fertilizer and fertilize according to the environment of the protected area.

The particularity of the protected land determines that fertilization is different from that of land. For example, temperature and temperature affect the application effect of chemical fertilizer. For example, when the temperature is low, the potassium sulfate compound fertilizer with high phosphorus and potassium should be added to increase the stress resistance of vegetables. Sex.

2. According to the situation of soil fertility, vegetable type, and fertilizer nutrient content.

Due to different levels of soil fertility, the amount of fertilizer required is not the same. If some plots are deficient in phosphorus and potassium, compound fertilizers with high phosphorus and potassium should be added. Different vegetable types require different fertilizer characteristics. For example, leafy vegetables require more nitrogen. It is necessary to purchase a compound fertilizer containing high nitrogen. Potassium sulphate compound fertilizer has high, medium and low concentrations. When applying, care should be taken not to calculate how much (quantity) is applied in the mu. The amount of fertilizer should be calculated by how much active ingredient is contained in the fertilizer.

3. Eliminate the "universal" theory

Because potassium sulfate compound fertilizer has high effective nutrient content, quick dissolving effect and easy vegetable absorption, it is welcomed by vegetable farmers, but it cannot be regarded as a universal fertilizer. If the disease occurs in vegetables, it should be solved by spraying pesticides, and fertilization will not achieve good results.

4, eliminate the misleading packaging

On the agricultural capital market, the potassium sulfate compound fertilizer has a wide variety of names, and the packaging is beautiful and attractive. The surface of the bag is painted with various kinds of vegetables. The vegetable farmers who do not know the knowledge of purchasing fertilizers are often deceived as vegetable special fertilizers. Pay attention to its logo, content, manufacturer, trademark, net weight, etc. when purchasing fertilizer.

5. Control the amount of fertilizer

Protected vegetables need a large amount of fertilizer, but not as much as possible. When applying, attention should be paid to the control of the amount of fertilizer used, especially high-concentration (greater than 40%) compound fertilizer. When used, scientific and balanced should be carried out according to the growth of vegetables. Fertilization

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