Balanced fertilization technology, ie formula fertilization, is based on crop fertilizer requirements, soil fertilization characteristics and fertilizer effects. Based on the application of organic fertilizer, the appropriate dosage and proportion of nitrogen, phosphorus, potassium and medium and trace elements are reasonably determined. Fertilization techniques using corresponding scientific methods of application.
Balanced fertilization technology system
First, the fertilization system. First, the combination of organic fertilizers and inorganic fertilizers can help each other, improve strengths and avoid weaknesses, and complement each other. It can meet the nutrient needs of crop growth period, increase fertilizer utilization rate, reduce production costs, increase production and income, and promote microbial activities. Improve crop nutrient conditions and maintain and improve soil fertility levels. The second is the mutual cooperation of nitrogen, phosphorus, potassium fertilizer and medium and trace elements in inorganic fertilizers, and the three elements of fertilizer are properly applied. Prevent the application of a certain type of fertilizer, resulting in poor fertilization effect and even side effects.
Second, the fertilizer operation. Balanced fertilization is based on the soil conditions and the nutritional characteristics of the crops. The most suitable dosage and ratio are based on the implementation of the formula, ie the appropriate amount and proportion of fertilizer in each growth period. Utilization rate.
1. The crops with short growth period should be based on the base fertilizer, and the early application of topdressing: while the crops with long growth period increase the proportion of topdressing and fertilization. In top dressing, we must first consider the critical period of crop nutrition and the maximum efficiency period to ensure that the fertilizer is effectively used by crops in a timely manner.
2, the sticky soil should be based on heavy base fertilizer, early top dressing (pre-promotion and post-control) fertilization to avoid late Qing. The sandy soil adopts the “less eating and more meals†fertilization method based on top dressing to prevent post-fertilization. The loamy soil adopts the method of base-tracking and heavy weight, leaving 20-30% as the panicle fertilizer and the flower-preserving fertilizer, in order to prevent the later de-fertilization and maintain a balanced growth.
3, different nutrients, different ways of operation. Nitrogen fertilizer: For example, rice has two peaks of fat absorption in one lifetime. Therefore, in the fertilization should emphasize the base fertilizer and tiller fertilizer, which is 70% base fertilizer, 20% split fat, 10% spike fertilizer. Phosphate fertilizer: The phosphate fertilizer of the current crop is used as the base fertilizer, and once concentrated application: rotation is used to distribute the phosphate fertilizer to the crop most sensitive to phosphorus. Potassium fertilizer: Potassium should be applied to the seasonal crops. Generally, it should be used as the base fertilizer, especially for crops with short growth period. Potassium should be applied as early as possible. Re-apply the base fertilizer, see the seedlings early fattening.
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