Organic fertilizer can provide a variety of nutrients for crops, promote soil microbial reproduction, improve soil structure, enhance the soil's fertilizer supply and buffer capacity, crop yield has a very important role. How to correctly apply organic fertilizer? The following is an introduction to the fertilization method of organic fertilizer.

Organic fertilizer composition is complex, in the application of reasonable is particularly important. Improper application will cause nutrient loss, and even crop root absorption difficulties, the occurrence of burning roots, seedlings and other phenomena.

Organic fertilizer should be fully rotted after application. If some animal manure such as pigs and cattle pen fertilizer as well as human waste is not fermented directly into the soil, these unrotted organic fertilizer in the soil by microbial decomposition and fermentation, resulting in ammonia is easy to trigger crop root burning, poisoning, and some will also breed weeds and the spread of pests and diseases. Therefore, it should be advocated that it be fully fermented and then applied. Can be built in the field storage manure pond fermentation, or the compost heap with water wet, sealed with mud, so that the temperature reaches 35-40 ℃, after 25-30 days can be fermented, the manure will be fully fermented at 60 ℃, can kill the insect eggs and weed seeds, the use of more safe and effective.

It is not advisable to concentrate too much or apply too much. Especially in dryland crop fertilization, if the organic fertilizer directly applied to the rows or near the roots of the crop, because of the dry soil water holding capacity is small, the root system around the concentration of a moment is too large, the root system in contact with the fertilizer heap, it will cause physiological water loss of the crop, the formation of reverse osmosis phenomenon, the crop not only absorbs the nutrients, on the contrary, it will make the root system of water and nutrients out of the infiltration of the crop, so that the crop grows poorly or wilting and loss of water and death of the seedling, resulting in soil nutrient imbalance. Soil nutrient imbalance. Therefore, organic fertilizer should be used as a base fertilizer, evenly mixed in the soil, to do with the soil as one. In the growing season, organic fertilizer should be applied in furrows or holes, mulching after application, and should not be spread on the ground. Leafy vegetables are generally not suitable for foliar spraying with a high concentration of liquid organic fertilizer.

Sun-dried application of fertilizer efficiency loss. In some places accustomed to organic fertilizers such as pigs and cows pen manure, dried in the sun or applied to dry soil crops on the topsoil, the result is to let the manure for a long time in the sun and rain, nitrogen has been volatilized loss of fast-acting phosphorus and potassium will be lost most of the time, and pollution of the environment. Some places in the use of straw as a source of organic fertilizer, due to fermentation and decay is not sufficient, and too much concentrated application of rice plants between the rows, the result is in the decay of a large number of hydrogen sulfide, more bubbles, so that the roots of rice black, late hair, not timely remedies will make the whole field of stagnant seedlings, resulting in a reduction in yield. Encountering this situation, the field should be drained and sunbathed immediately, and after draining and sunbathing the field, early spraying of sodium dinitrophenol and other growth regulators to promote the growth of the root system, and add 1% potassium dihydrogen phosphate and 1% urea mixed spray, which can be better restored to normal growth.

Reasonable collocation use. Straw, pig and cattle pen manure, green manure and other organic fertilizers, its cellulose (i.e., carbon) content, nitrogen content is less, if the amount of such fertilizers is too large, easy to cause the crop pre-nitrogen deficiency and stagnant seedlings do not hair, which is the paddy straw to return to the field must be matched with the application of ammonium carbon to supplement the rationale for nitrogen. Therefore, the crop application of organic fertilizer is not the more the better, generally 1000-1500 kg per mu of column fertilizer or green manure 1000-1500 kg, and in the application of the appropriate amount of ammonium carbon or urea, in order to regulate the ratio of carbon and nitrogen to meet the needs of microorganisms, to prevent microorganisms and crops compete for the phenomenon of nitrogen. Organic fertilizer in the high nutrient content of sheep manure, decomposition speed, fertilizer effect is more violent, should be added to the application of the appropriate amount of pig manure or cow dung, to achieve the purpose of smooth fertilizer effect. Organic fertilizer with phosphorus fertilizer, is conducive to improving the effectiveness of phosphorus fertilizer, organic fertilizers and bio-fertilizers with is also conducive to improving the effectiveness of fertilizer.

The above is the organic fertilizer fertilization method of some of the introduction, we can understand after the actual planting situation, reasonable selection and application of organic fertilizer.