Organic fertilizer is not only an ideal base fertilizer, but also as topdressing. It is the main fertilizer variety to provide nutrients during crop growth. Attention should be paid to the following matters when organic fertilizer is used as topdressing:
Organic fertilizer contains available nutrients, but the quantity is limited. It needs a certain process to release a large amount of slow-acting nutrients. Organic fertilizer should be used as topdressing a few days in advance.
Top application of high quality organic fertilizer
During the rapid growth of crops, a large amount of nutrients such as nitrogen and potassium are needed. Generally, the content of nitrogen and potassium nutrients in organic fertilizers is not high. In order to ensure the nutrient requirements of the rapid growth of crops, high-quality organic fertilizers with higher nitrogen and potassium nutrients should be selected . The rotary drum granulator mixes raw materials containing different nutrients of NPK with organic matter to make high-nutrient organic fertilizer.
Make reasonable distribution proportion of base fertilizer and topdressing fertilizer
When the soil temperature is low, the microbial activity is weak and the nutrient release of organic fertilizer is slow, so most of