On the basis of applying basal fertilizer, the top dressing is done a small number of times, and NPK is used in combination. The seedling stage is dominated by light and light fertilizers. During the period of ginger expansion, fertilization can be appropriately increased in the middle and late stages of rapid expansion of ginger. During the lifetime of ginger, there are two important fertilization periods. The first is the period from the Sun Mei period to the fourth period. It is the peak period of absorption of ginger in the life. The absorbed nitrogen, phosphorus, and potassium are 52.5%, 12.5%, and 30.5%, respectively. About the month of June; the second is during August-September, the climate turns cool and the temperature difference between day and night is big. This is the prime time for the rapid expansion of ginger, and it is necessary to use rainy days to increase the amount of fertilizer. This is the second key application of fertilizer application of imported compound fertilizer plus Application of urea is good, in the fertilization, if it is too dry to take water pouring is better
Ginger's rhizomes absorb less nitrogen, phosphorus, and potassium at the seedling stage. Phosphorus uptake during the vigorous growth period slowly increases, and the demand for nitrogen and potassium soars, especially in the early growth stage. In the vigorous growth period, the absorption of nitrogen is more than potassium in the middle and late stages, absorbing more potassium than phosphorus. Therefore, in terms of production, formula fertilization according to the law of ginger fertilizer requirements, timely application of nitrogen fertilizer will help increase production.
The fertilization of ginger is divided into base fertilizer and top dressing. Basal organic manure, cake fertilizer and fertilizer. The organic fertilizer is applied in combination with soil preparation before sowing. Generally, 5 to 8 squares of chicken manure are detoxified per acre, and the soil is rotatively cultivated after application. The application of cake fertilizer and fertilizer concentrates to the ditch means that the crushed cake fertilizer and chemical fertilizer are applied to the sowing ditch before sowing. In general, 75 to 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.
In addition to applying base fertilizer, three top dressings are generally performed. The first time to catch “strong seedling fertilizerâ€: at the seedling stage, the plant growth is small and the fertilizer is not needed, but the seedling growth period is long. It is to promote seedling growth and robustness, usually about 30 cm in seedling height, with 1 or 2 branches. The first top dressing was done. The topdressing fertilizer is dominated by nitrogen fertilizer. Apply ammonium sulfate or diammonium phosphate 20 kg per acre. If the sowing date is too early and the seedling period is longer, fertilization can be performed 2 to 3 times with watering. The amount of fertilization is the same as above.
The second round of “turning fertilizerâ€: before and after the beginning of autumn, this is the turning period of ginger growth, and also the turning point of absorption of nutrients. Since then, the growth of plants has accelerated, and a large number of nutrients have accumulated to form product organs. Therefore, as the demand for fertilizer and water increases, in order to ensure high yield of ginger, the second time of top dressing is performed before and after the start of the autumn in combination with ginger field weeding. This top dressing plays an important role in promoting tree growth and rhizome enlargement. This top dressing generally uses a combination of farmyard manure with long-lasting fertilizer or quick-acting fertilizers. 70-80 kg of crushed cakes per acre, 3 to 4 squares of decomposed chicken manure, 50 to 100 kg of compound fertilizer or 20 kg of urea, 30 kg of diammonium phosphate, 50 kg of potassium sulfate, one side of the ginger seedlings A fertilization ditch is opened at the base 15 centimeters. Fertilizer is sprinkled into the ditch and mixed with the soil. Then, the soil is ditched, soil is soiled, and the soil is finally drenched.
The third time to pursue “Zhuang Jiang Feiâ€: In early September, when the ginger seedlings have 6 to 8 branches, it is also the rapid expansion period of roots and stems. According to the growth of the plants, the third time, the top dressing is called “Zhuang Ginger Fertilizer. ". For ginger fields with weak growth or general growth and low-fertility ginger fields, fast-acting fertilizers, especially potassium fertilizers and nitrogen fertilizers, can be applied at this stage to ensure the nutrient required for roots. Generally 25-30 kg of compound fertilizer per acre or 2.5 kg of ammonium sulfate and potassium sulfate. For ginger fields with high soil fertility and vigorous plant growth, little or no nitrogen fertilizer should be applied to prevent stems and leaves from being long and affecting nutrient accumulation.
Zinc fertilizer and boron fertilizer can usually be used as base fertilizer or top dressing. When zinc deficiency and boron deficiency ginger field is used as base fertilizer, generally 1 to 2 kg of zinc sulfate and 0.5 to 1 kg of borax are applied per mu, and evenly mixed with fine soil or organic fertilizer. When sowing, it is applied in the sowing ditch and the soil is mixed: For topdressing and foliar spraying, 0.05 to 0.1% borax can be used for 50 to 70 liters per acre, and they are sprayed three times during the seedling stage, hair growth stage and rhizome expansion stage.
PVC Suction Catheter,High Quality PVC Suction Catheter,PVC Suction Catheter Details, CN
K-MED Co., Ltd. , https://www.kmedasia.com