How to apply potash fertilizer in orchard?

How to apply potash fertilizer in orchard? What are the methods of traditional orchard fertilization methods often only pay attention to the application of nitrogen fertilizer, while ignoring the application of phosphorus and potassium fertilizer, especially potassium fertilizer. Potassium deficiency in orchards can affect flower bud differentiation, cold resistance and fruit coloring, and reduce yield and fruit quality. When the potassium deficiency is serious, the leaf margin or the whole leaf is scorched, expanding upward and downward from the middle and lower part. after drying up, the leaf can hang on the branch for a long time, the unwithered leaf curls and shrinks, the flower bud is small, and the fruit color is poor. The soil itself contains a certain amount of potassium, but due to the application of soil miscellaneous fertilizer in many orchards is too little, the topdressing of potash fertilizer can not keep up with the application of potassium fertilizer, resulting in a considerable number of orchards lack potassium. The most fundamental way to change soil potassium deficiency mainly includes increasing the content of organic fertilizer, because organic fertilizer contains more comprehensive nutrients. Orchards with obvious symptoms of potassium deficiency can be topdressing available potassium fertilizer such as potassium acid. The most suitable period for applying potash fertilizer is from June to August, when the soil temperature is suitable, the root system is active, and the tree absorbs a large amount of potassium fertilizer, and the effect is obvious. Usually, potash fertilizer can be applied with base fertilizer or with nitrogen, phosphorus and potassium. The application ratio of nitrogen, phosphorus and potassium can be controlled at 1: 1. 0. 5: 1, combined with orchard, the application of potassium fertilizer can be 1.0-1.5 kg per 100 kg fruit. In the growing season of orchards with severe potassium deficiency, 0.3% potassium dinitrogen phosphate or 4% plant ash extract can be sprayed, which can quickly and reduce the cost. Potash fertilizer plays a significant role in improving fruit quality and yield, but it is not the more the better. Excessive potassium fertilizer can affect the absorption of calcium and cause bitter pox disease and water heart disease of fruit, so the application of potash fertilizer should be enough. The supplement of potash fertilizer in orchard can be done through the following ways: ① application of organic fertilizer. In recent years, the amount of organic fertilizer applied in orchards has been insufficient, and some of them have not even applied organic fertilizer. Chemical fertilizers alone not only can not supplement potassium in the soil, but also destroy the structure of the soil. Therefore, increasing the application of organic fertilizer is an effective measure to solve soil potassium deficiency. ② ground covered with grass and green manure. Plants are rich in potassium, so grass mulching and application of green manure can not only effectively increase the content of potassium in soil, but also improve the physical and chemical properties of soil. Plant ash was applied to ③. Plant ash is the farm fertilizer with the highest content of potassium. Plant ash is dried and stored, and each adult fruit tree is applied 4 kilograms of hay ash to meet its demand for potassium fertilizer. The ④ orchard is deeply turned over. Autumn and winter deep turn the orchard soil (30cm to 50cm) to enhance soil permeability, promote microbial activity, and transform insoluble potassium into potash fertilizer. Biological potassium was applied to ⑤. As we all know, although there is a lot of potassium in the soil, more than 90% of it is insoluble. Biological potassium (silicate bacterial agent) can not only convert insoluble potassium into available potassium in soil, but also decompose ineffective phosphorus into available phosphorus for plant absorption and utilization. Click to get more nitrogen, phosphorus, potassium application techniques click to get more chemical fertilizer application techniques