1, choose commodity organic fertilizer to be cautious. First of all, we must clarify the source of raw materials. The second choice of commodity organic fertilizer is first conducted in a small-scale test demonstration.
2. Apply after maturity. Most of the organic fertilizers such as newly purchased chicken excrement, cow dung, and other harmful substances that often contain germs, direct use of the crop is not conducive to the accumulation of fermentation should be used.
3, strictly control the amount of fertilizer. Organic fertilizers are bulky and have low nutrients and need to be applied in large quantities to meet crop needs, but not as much as possible. The control amount of vegetable land per acre per season is chicken manure: 1500-2000 kg. Fruit and tuber vegetable crops require large amount of fertilizer, generally about 2,000 kg; green leaf crops require relatively small amount of fertilizer to be 1500 kg.
4, organic and inorganic use. Organic fertilizer has all the nutrients, but when the crop grows and needs fertilizer peaks, it is often under-supplied; inorganic fertilizers are easily decomposed and are conducive to crop absorption, but their stamina is not sufficient. Organic fertilizers and inorganic fertilizers can be used together to meet the fertilizer requirements of crops.
5, the main base of deep-fertilizer. The organic fertilizer has long-lasting fertilizer effect and slow release of nutrients. Generally, it is used as a base fertilizer. Applying organic fertilizer during deep plowing will facilitate the integration of soil and fertilizer, promote the formation of soil aggregate structure, and effectively improve soil properties.
6, with bio-fertilizer application. Biological bacteria in biological fertilizers can accelerate the decomposition of organic matter in organic fertilizers, and can also decompose and transform harmful substances in organic fertilizers. Generally, when organic fertilizer is used as the base, 150-200 kilograms of biological fertilizer can be applied per acre, and for topdressing, 20-25 kilograms can be applied per acre.
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