As far as the current organic agricultural production is concerned, it is necessary to first eliminate urban garbage and sludge, including industrial organic fertilizer containing some heavy metals as raw materials without high temperature or harmless treatment.
Generally, we should choose some straw, grain essence or some food residues, or some organic fertilizers produced by raw materials such as vegetable protein oil, soybean meal and peanut meal. After high temperature and harmless treatment, this organic fertilizer has strong chelation. After entering the soil, it can feed a large number of microorganisms and directly supply crops with nutrients. At the same time, these organic compounds are the synthesis of various complex acids. It can chelate a large number of elements in the soil, so when using this organic fertilizer, it can solve the soil microenvironment problems, solve the physiological changes of crop growth on the ground, continuously improve the soil and produce high-quality agricultural products.
How to judge the quality of organic fertilizer
The test method of powdered organic fertilizer is to put it directly into a glass of water. If it floats, it is a qualified organic fertilizer. If you sink directly, there may be problems, because organic matter is lighter than water. Testing granular organic fertilizer is to put it in water to see its solubility. Generally, the more precipitates, the worse, and the higher the solubility, the better.
The following methods can also be adopted:
Touch it: it is smooth and loose, and it can be dispersed by touching it.
Second taste: a little fragrance and distiller's grains taste better.
Third look: grayish white is too ripe, which is generally not recommended. Semi-mature organic fertilizer is often used in the field. This kind of fertilizer can continue to decompose in the field, and can combine with organic matter in the soil to form new humus, with better effect.
It should be noted that the action period of organic fertilizer is relatively long, and it takes a process to improve soil fertility.