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In addition to applying the base fertilizer, it is generally carried out three times of topdressing. The first time chasing "strong seedling fertilizer": the first top dressing is carried out when the seedling height is about 30 cm and there are 1 or 2 branches. This time, the topdressing is mainly based on nitrogen fertilizer, and 20 kg of ammonium sulfate can be applied per mu. If the sowing date is too early, the seedling period is longer, and the fertilization can be carried out 2 to 3 times with the watering, and the amount of fertilization is the same as above.
The second time chasing "turning fat": before and after the beginning of autumn, this is the turning point of ginger growth, and it is also the turning point of absorption of nutrients. Since then, the growth of plants has accelerated, and a large amount of nutrients have accumulated to form product organs. Therefore, the demand for fertilizer and water The amount increases. In order to ensure high yield of ginger, we used Jiangtian weeding before and after the fall of the autumn, and carried out the second top dressing. 70-80 kg of crushed cake fertilizer per mu, 3 to 4 squares of decomposed chicken manure, 50-100 kg of compound fertilizer, or 20 kg of urea, 30 kg of diammonium phosphate, 50 kg of potassium sulfate, one side of ginger seedlings A fertilization ditch is opened at the base of the plant 15 cm, the fertilizer is sprinkled into the ditch, and mixed with the soil, then the soil is sealed, the soil is soiled, and finally the water is poured.
The third time chasing "Zhuang Jiangfei": In the first ten days of September, when the ginger seedlings have 6-8 branches, it is also the period of rapid expansion of the rhizome, and the third top dressing can be carried out according to the growth of the plant, which is called "strong ginger fertilizer." ". Generally, 25 to 30 kg of compound fertilizer or 2.5 kg of ammonium sulfate and potassium sulfate are applied per mu. For the ginger field with high soil fertility and strong plant growth, less or no nitrogen fertilizer should be applied to prevent stems and leaves from growing and affecting nutrient accumulation.
Zinc and boron fertilizers can usually be used as base fertilizer or top dressing. In the case of zinc-deficient and boron-deficient ginger, generally apply 1~2 kg of zinc sulfate and 0.5-1 kg of borax per acre, and mix it evenly with fine soil or organic fertilizer. When planting, apply it in the seeding ditch and mix with the soil; For topdressing and foliar application, 0.05% to 0.1% borax may be used in an amount of 50 to 70 liters per mu, respectively, in the seedling stage, the hair growth stage, and the rhizome expansion period, or 800 g per acre of zinc per house. , Meikefeng large granular boron 200 grams, federal potassium 4000 grams, both increased production and can prevent ginger rickets.
How to fertilize ginger during the growing season
The fertilization of ginger is divided into base fertilizer and top dressing. The base fertilizer is divided into organic fertilizer, cake fertilizer and fertilizer. Organic fertilizer is applied in combination with the ground before planting. Generally, 5 to 8 square meters of high-quality decomposed chicken manure is applied per acre. Rotary tillage after application; cake fertilizer and fertilizer are concentrated in the ditch, that is, the crushed cake fertilizer and fertilizer are concentrated into the seeding ditch before sowing. In general, 75-100 kg of cake fertilizer per acre, 50 kg of nitrogen, phosphorus and potassium compound fertilizer or 25 kg of urea, superphosphate and potassium sulfate.
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