Main points of fertilization techniques for pollution-free vegetables
2022-10-07 08:08:07
I. Re-application of organic fertilizers Organic fertilizers are not only comprehensive in nutrients, but also have long-lasting fertilizer effects. They also have the effect of fertilizing fertilizers to improve soil quality, which is conducive to high-quality and high-yield vegetables. The amount of organic fertilizer applied should be sufficient. Generally, 5000 kg of high-quality farmyard manure should be applied per mu. Before the application of the fertilizer, it should be fully decomposed and innocuously treated to kill the bacteria, parasite eggs and weed seeds.
Second, limited application of chemical fertilizers in the growth process of pollution-free vegetables, a certain proportion of chemical fertilizers can be properly applied, but to control the amount of application, to be scientific and reasonable. Excessive application of chemical fertilizers can cause pollution to soil and groundwater. The ratio of application of nitrogen, phosphorus and potassium fertilizer should be carried out by soil testing and fertilization to facilitate the balanced absorption of nutrients by vegetables.
3. Nitrogen Fertilizer Deep application of soil nitrogen fertilizer after deep application of soil cover can reduce its exposure to air and sunlight, prevent nitrogen volatilization and contaminate vegetables. Generally, the nitrogen fertilizer should be applied at a distance of 10 to 15 cm from the soil surface. The roots of the solanaceous fruits and root vegetables should be applied to the root layer below 15 cm. Deep application of nitrogen fertilizer can not only reduce the accumulation of nitrate in vegetables, but also improve its quality and yield.
Fourth, the application of trace elements and trace elements is an indispensable nutrient in the growth process of vegetables. Although the amount is small, it plays a role in coordinating various nutrient ratios and promoting photosynthesis. Adding micro-fertilizer can not only improve the yield of vegetables, but also effectively improve the quality of vegetables. But be careful, be sure to use it correctly, and don't blindly apply it.
Huaxian Agricultural Technology Center Liu Xiuling
Second, limited application of chemical fertilizers in the growth process of pollution-free vegetables, a certain proportion of chemical fertilizers can be properly applied, but to control the amount of application, to be scientific and reasonable. Excessive application of chemical fertilizers can cause pollution to soil and groundwater. The ratio of application of nitrogen, phosphorus and potassium fertilizer should be carried out by soil testing and fertilization to facilitate the balanced absorption of nutrients by vegetables.
3. Nitrogen Fertilizer Deep application of soil nitrogen fertilizer after deep application of soil cover can reduce its exposure to air and sunlight, prevent nitrogen volatilization and contaminate vegetables. Generally, the nitrogen fertilizer should be applied at a distance of 10 to 15 cm from the soil surface. The roots of the solanaceous fruits and root vegetables should be applied to the root layer below 15 cm. Deep application of nitrogen fertilizer can not only reduce the accumulation of nitrate in vegetables, but also improve its quality and yield.
Fourth, the application of trace elements and trace elements is an indispensable nutrient in the growth process of vegetables. Although the amount is small, it plays a role in coordinating various nutrient ratios and promoting photosynthesis. Adding micro-fertilizer can not only improve the yield of vegetables, but also effectively improve the quality of vegetables. But be careful, be sure to use it correctly, and don't blindly apply it.
Huaxian Agricultural Technology Center Liu Xiuling
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