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How to fertilize the field?
The fertilization technique of throwing the field depends on the soil used in the plate. The use of special nutrient soil is generally not easy to defer, in the early stage may not be fertilized, if there is de-fermentation in the later stage, apply 1% to 2% urea solution or potassium dihydrogen phosphate solution, spray 150-200 ml per square meter. Or apply 100-200 grams of ammonium sulfate per square meter and spray 5-10 liters of water. Wash the seedlings with water after fertilization, do not drench the water after fertilization or directly apply urea and compound fertilizer to prevent fertilizer damage. 2 to 3 days before the throwing, the manure is applied, 25 grams of urea per square meter, and 2.5 liters of water. No special nutrient soil is prepared. If the sag mud is used as the soil, the time and frequency of fertilization can be increased and increased according to the growth of the seedlings. Milk can be fertilized in advance in the 1st and 1st heart stage, and the seedlings can be quickly absorbed. Generally, 50 g of ammonium sulfate per square meter is applied, and 2.5 liters of water is applied. In addition, 2-3 days before throwing, the application of martilization should be carried out. The amount of fertilizer applied and the application method are the same as above, but the fertilizers for topdressing are preferably acidic fertilizers such as potassium dihydrogen phosphate or ammonium sulfate. Urea can be used, but ammonium bicarbonate cannot be used.
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