1. Adding zinc fertilizer can reduce the content of nitrate and nitrite in fresh vegetables, and at the same time, with the application of strong stems, the roots and stems of the plants can be strong, the leaves are green, and the natural taste is strong. The production of 1000 kg of celery requires 2.0 kg of pure nitrogen, 0.93 kg of phosphorus pentoxide, and 3.9 kg of potassium oxide.
2. Before planting, apply 4000~5000 kg of organic fertilizer per acre, 150 kg of bio-organic compound fertilizer, 40 kg of urea, 25-35 kg of superphosphate, 40 kg of potassium sulfate, and 1 to 1.5 kg of zinc sulfate.
3, the plant enters the vigorous growth period, the first top dressing, 3 kg of pure nitrogen per mu, 5 to 6 kg of potassium oxide. After half a month into the second top dressing, apply 2 to 2.5 kg of pure nitrogen per mu and 4 to 5 kg of potassium oxide. In the vigorous growth period, 0.2 to 0.5% borax can be sprayed outside.
4, per mu can be used to fertilize organic fertilizer 3000-4000 kg or dry chicken manure 1300 kg, plus superphosphate 40-50 kg, potassium sulfate 7-10 kg, ammonium sulfate 30-40 kg or compound fertilizer 75 kg as the base fertilizer After fully mixing the base fertilizer and the soil, the box is 1.5 meters wide, the width of the groove is 0.3 meters, the depth of the ditch is 0.3 meters, and 6 plants are planted at each hole. The row spacing is 15 cm, and 1200 bushes per acre.
5, 7 days before planting, 7-10 days after planting, can apply about 10% of the Qingshui water or 5 kg of urea per acre for leaching, promote seedlings to form a good root system, restore growth. In the next 40 days, 10 kg of urea or 30-40% of clear manure water can be used for 1-2 times to promote heart leaf growth.
2. Before planting, apply 4000~5000 kg of organic fertilizer per acre, 150 kg of bio-organic compound fertilizer, 40 kg of urea, 25-35 kg of superphosphate, 40 kg of potassium sulfate, and 1 to 1.5 kg of zinc sulfate.
3, the plant enters the vigorous growth period, the first top dressing, 3 kg of pure nitrogen per mu, 5 to 6 kg of potassium oxide. After half a month into the second top dressing, apply 2 to 2.5 kg of pure nitrogen per mu and 4 to 5 kg of potassium oxide. In the vigorous growth period, 0.2 to 0.5% borax can be sprayed outside.
4, per mu can be used to fertilize organic fertilizer 3000-4000 kg or dry chicken manure 1300 kg, plus superphosphate 40-50 kg, potassium sulfate 7-10 kg, ammonium sulfate 30-40 kg or compound fertilizer 75 kg as the base fertilizer After fully mixing the base fertilizer and the soil, the box is 1.5 meters wide, the width of the groove is 0.3 meters, the depth of the ditch is 0.3 meters, and 6 plants are planted at each hole. The row spacing is 15 cm, and 1200 bushes per acre.
5, 7 days before planting, 7-10 days after planting, can apply about 10% of the Qingshui water or 5 kg of urea per acre for leaching, promote seedlings to form a good root system, restore growth. In the next 40 days, 10 kg of urea or 30-40% of clear manure water can be used for 1-2 times to promote heart leaf growth.
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