Prevention of fertilizer damage and its remediation technology
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Remedial measures should be taken for the occurrence of fat damage, the soil in the fertilization site should be excavated, the soil in the hole should be poured with clean water, the concentration of soil fertilizer solution should be diluted, and the coarse roots that have been rotted should be cut off, and the new soil will be covered. The branches are trimmed.
To prevent the occurrence of fertilizer damage, it is necessary to achieve reasonable fertilization:
1. Reasonable selection of fertilizer varieties. Perennial economic crops should be mainly composed of soil and organic fertilizers. Fertilizers and organic fertilizers should be mixed and applied. Soil and fertilizers and organic fertilizers can provide various nutrients, improve soil and improve soil. Buffering capacity to reduce the occurrence of fat damage. The same is chemical fertilizer, containing chlorinated fertilizer is the most prone to fat damage, there are many varieties of fertilizer on the market, the quality is not abandon, the majority of farmers should pay special attention when choosing.
2, improve the fertilization method, winter and spring base fertilizer should be applied in the outer ring of the canopy, the depth and width of the ditch are 20-30 cm, after the application of soil, when the fertilizer is applied as a top dressing, it should be poured with water, or when the soil is wet after rain. Apply.
3. Control the amount of fertilizer, especially nitrogen fertilizer. For the average plant producing 50 kilograms of orange and pear trees, the urea should not exceed 100 grams per plant, and the other nitrogen fertilizers should not exceed 250-300 grams. More than 25 kg, a small number of multiple applications should be promoted for young and sick fruit trees.