Organic fertilizer is not only an ideal base fertilizer, but also a top dressing. It is the main fertilizer type that provides nutrients during crop growth. Organic fertilizer should pay attention to the following matters when doing topdressing:
1. Early pursuit of organic fertilizers contains available nutrients, but the quantity is limited. The release of a large number of slow-acting nutrients requires a certain process. Organic fertilizers should be applied a few days in advance.
2. High-quality organic fertilizer crops require a large amount of nitrogen, potassium and other nutrients during rapid growth. Generally, the nitrogen and potassium nutrients in organic fertilizers are not high. To ensure the rapid growth of crops, the demand for nutrients should be nitrogen and potassium. High quality organic fertilizer with high nutrient content.
3. When formulating a reasonable proportion of base fertilizer distribution, the microbial activity is weak, the release of organic fertilizer nutrients is slow, and most of the application amount can be applied as the base fertilizer; when the ground temperature is high, the microbial decomposition ability is strong, if the base fertilizer is used too much, Before planting, the fertilizer is excessively decomposed by microorganisms, and immediately after planting, it exerts fertilizer effect, which may sometimes cause crops to grow. Therefore, in the cultivation of crops under high temperature conditions, it is best to reduce the amount of base fertilizer application and increase the amount of topdressing.
4, nursery seedlings appropriate crops seedlings need a small amount of nutrients, but insufficient nutrients can not form strong seedlings, not conducive to transplanting, but also not conducive to future crop growth. Fully decomposed organic fertilizer, nutrient release and nutrient comprehensive, is an ideal fertilizer for seedlings. Generally, a certain amount of grass carbon, vermiculite or perlite is added by fermenting the organic fertilizer, and the soil is uniformly mixed to make the seedling substrate. The amount of the organic fertilizer cannot exceed 10% of the total weight of the nutrient soil.
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