The nutritional content and characteristics of different organic fertilizers vary greatly, and the following matters must be paid attention to when using organic fertilizers.
1. In addition to the crop straw directly returned to the field, organic fertilizers generally need to be composted to make them completely decomposed before being applied to the soil, especially high-calorie organic fertilizers such as cake fertilizer and chicken manure, and seedlings are burned.
2. Human manure is a fast-acting organic fertilizer with high nitrogen content, which is suitable for fertilization. It should be treated harmlessly before use, depending on the use of the crop. If too much is used in chlorine-resistant crops, the quality will be reduced. Long-term single use of human manure soil must be equipped with a certain amount of manure, compost, compost and other fertilizers containing organic matter to ensure the balanced supply of soil nutrients.
3. Compost, compost, biogas residue fertilizer, etc. contain a lot of humus, suitable for fertilizing soil. However, since there is still a large amount of organic matter that has not been completely decomposed and decomposed, these fertilizers should be used as base fertilizers, rather than fertilizers.
4. When using straw or mountain grass as fertilizer, first, use it in advance; Second, disconnect use; Third, with a certain amount of fresh green manure or decomposed human manure, reduce the carbon nitrogen ratio, meet the needs of microbial reproduction nitrogen, and initially supplement phosphate fertilizer; Fourth, fully mix with the soil to maintain adequate water supply; Fifth, the total number of straw or mountain grass should not be too much to prevent excessive organic matter in the decomposition process to cause harm to crop roots; Sixth, crop straw or mountain grass in areas with serious diseases and pests or serious pollution cannot be directly returned to the field (pile and return to the field after fermentation), so as not to cause the spread of diseases and pests or land pollution.
5. Grass ash contains 5% ~ 10% potassium oxide, is alkaline, can not be mixed with decomposed human manure, manure or storage, to prevent weight loss.
6. Peat, also known as peat or peat, contains organic matter and humus, but the acid value is high, active iron and active aluminum are high, the decomposition degree is low, generally not directly used as fertilizer, commonly used as base fertilizer or livestock gasket material.
7. Humic acid organic fertilizer has good effect on poor soil, leafy vegetables, tubers, tubers and gramineous crops, but poor effect on rape, cotton wool, beans and other crops.
