The emphasis on agricultural production is to obtain higher benefits with less investment. One of the methods is economic fertilization. The common method is to use chemical fertilizer and organic fertilizer.
The advantage of using chemical fertilizers and organic fertilizers together is that they can increase the overall effect of fertilizers. After being mixed with organic fertilizers, chemical fertilizers can promote faster decomposition of organic fertilizers and release nutrients faster. Organic fertilizers can also adsorb chemical fertilizers, especially superphosphates and trace elements that are easily fixed by the soil or easily lost, thereby increasing the utilization of chemical fertilizers. The second is to increase the nitrogen nutrition of crops. Such as organic fertilizer and superphosphate or calcium magnesium phosphate fertilizer can promote the growth of the original nitrogen-fixing bacteria in the soil, can also promote better growth of legumes in legume crops, and will help increase the level of nitrogen supply to crops. In addition, organic fertilizers have a high content of organic matter and relatively complete nutrients, which can both improve the soil and supply energy to crop nutrients. The third is to ease the fertilizer damage caused by the excessive application of chemical fertilizers or chemical fertilizers on the crops and the neutralization of soil acidification, which is conducive to maintaining a good balance of nutrients in the crop root system. The fourth is to enable quick and slow combination of quick-acting fertilizers and delayed-effect fertilizers, complementing each other's advantages, avoiding shortcomings, and providing effective supplies. Fifth, it can purify the living environment of humans and crops, and also make the application of fertilizers safe, economical and effective. Fertilizers that can be mixed with organic fertilizers include superphosphate, phosphate rock, copper slag phosphate, and urea.
Although there are many advantages in using chemical fertilizers and organic fertilizers, there are also mistakes in misuse. Therefore, attention should be paid to the following points in the mixing technology: 1. The decomposed organic fertilizer cannot be mixed with alkali chemical fertilizer because the ammonium nitrogenous fertilizer is easy to volatilize; 2. When the decomposed organic fertilizer is mixed with neutral or acidic fertilizer, it must be followed. Mixed use; 3, nitrate nitrogen fertilizer should not be mixed with the unripe organic fertilizer, due to denitrification easy to make nitrogen volatilize; 4, fresh grass, straw should not be mixed with nitrogen fertilizer stacking in order to avoid nitrogen Sulphur is absorbed and fixed by microorganisms and becomes a slow fertilizer.
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