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Fertilization method for new vegetable fields
The soil quality of the deep-cultivated soil-changing new vegetable land is generally poor. The cultivated layer is only about 15 cm, which is changed to vegetable soil. Due to the increase in planting number and nutrient consumption, the tillage layer should be gradually deepened to improve its physical properties. The deep ploughing time can be arranged when the summer and autumn vegetables are out of the garden, and each of them is turned twice, so that the tillage layer reaches 25 to 40 cm.
In order to improve the soil structure, it is necessary to have substances that can stabilize the structure, such as improvers, urban organic waste, and organic fertilizers. The application of organic fertilizer can not only supply the needs of vegetables for nitrogen, phosphorus and potassium, but also promote the formation of soil aggregate structure, improve the ability of water retention and fertilizer retention and increase the buffer capacity of soil. It is the material guarantee for fertilizing new vegetable fields. Great attention should be given.
The leguminous green manure legume green manure is used to fix the nitrogen in the atmosphere. After picking the edible part, the straw is returned to the field, especially the fresh stems and leaves such as peas and broad beans are pressed to increase the soil organic matter and nitrogen content.
Reasonable rotation of vegetable continuous cropping will lead to soil acidification, salinization and disease spread. In the area of ​​grain-changing vegetables, special attention should be paid to rational rotation, using the differences in the absorption of different varieties of vegetables, slowing the excessive consumption of certain nutrients, avoiding or alleviating the above problems, so as to give full play to the production potential of the new vegetable fields. For example, some mustard, peas, etc. can be arranged in the rotation, which can absorb phosphorus and potassium which cannot be utilized by ordinary vegetables, and 14% to 34% are re-used in the soil in the available state to improve phosphorus and potassium nutrition for the sorghum vegetables. situation. There are many ways to rotate, but one season of legumes should be arranged in the rotation.
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