1, extension vinegar. Before and after the dumping of the plants, the timely application of 667 square meters of cooked-cake fat 40-100 kilograms, adding urea 5-7 kilograms, superphosphate 10-15 kilograms, potassium sulfate 5 kilograms. At this time the temperature is high, thunderstorms and more, the fertilizer applied in the topsoil layer, the nutrient layer was evaporated, therefore, should be placed in the roots of watermelon roots applied organic fertilizer and fertilizer and cover soil, in order to improve the efficiency of fertilizer.
2, swelling melon fertilizer. Fertilizer is mainly composed of biological bacterial fertilizers, phosphorus and potash fertilizers, and nitrogenous fertilizers. If nitrogen is used excessively, the quality will decline. General 667 square meters of biological bacteria fertilizer 20 kg, 15 kg of ammonium phosphate, potassium sulfate 5 kg.
3, timely spray fertilizer. After applying the expansion melon fertilizer, it is generally no longer top-dressing before harvesting. At this point the watermelon need phosphorus and potassium, then the topdressing of phosphorus, potash fertilizer often delay the key needs of fertilizer. If there is fertilizer deficiency, it can be sprayed with 0.2% urea and 0.2% potassium dihydrogen phosphate solution.
Watermelon application of chlorine-containing fertilizers will affect the accumulation of sugar, so that the melon taste becomes light, so pay attention to the fertilizer should not be applied to the watermelon fertilizer containing chloride ions, such as ammonium chloride, potassium chloride, should be applied ammonium sulfate, potassium sulfate, Potassium dihydrogen phosphate fertilizers. Overcast and rainy days, the air has high humidity, soil moisture is high, and the ability to attract fertilizer and fertilizer is poor. At this time, fertilization may cause vine leaves to grow long, and leaves may be tender and susceptible to insect pests.
Biapenem Api,Biapenem Crude,Biapenem Powder,Biapenem Side Chain
Xinxiang Haibin Pharmaceutical Co.,Ltd , https://www.carbapenemspharmacy.com