Balanced fertilization techniques to improve saline-alkali land

At present, the domestic saline soil or saline-alkali soil has a wide distribution, large area and many types, and it mainly occurs in arid, semi-arid and semi-humid areas. The soluble salts of saline-alkali soils mainly include sulfates, chlorides, carbonates, and bicarbonates of sodium, potassium, calcium, magnesium, and the like. Sulfates and chlorides are generally neutral salts, and carbonates and bicarbonates are basic salts. The formation of soil salinization or salinization is due to the fact that the soil bottom or groundwater salinity rises with the capillary water to the surface and the salt accumulates in the surface soil after the water evaporates. It can also be interpreted as the accumulation of easily soluble salts in the soil surface. The phenomenon or process.
In most salinized soils, the soil organic matter content is low, the mineral nutrients are not balanced, and the trace elements are lacking. The mineral elements necessary for crops are formed due to the high pH value of the soil and are difficult to be absorbed and utilized by crops, resulting in lack of crop nutrients. The improvement and fertilization methods of salt-alkali soil (saline-alkali soil) are now described as follows:

As the saying goes: “Alkali eats large, hypertrophic alkaloids.” The fertilizer referred to here refers to organic fertilizers. Adding organic fertilizer to saline land can increase the content of organic matter in the soil and make the crop fully nutritional throughout the whole growing process. Improve soil fertility and buffer capacity for acid and alkali and harmful ions, reduce salinity and pH in soil, reduce salt damage to crops, and promote soil maturation. In general, 3-4 m3 of organic manure is applied to each acre of saline-alkali land after fully fermenting and decomposing (dumbnut organic manure starter), and it is necessary to insist on returning straw every year. In the current situation of the shortage of organic fertilizers, combined with the application of microbial fertilizer microbial fertilizer is also an effective way to solve the problem of desalination. Jinbao microbial fungus not only contains various functional bacterial groups, such as nitrogen-fixing bacteria, phosphorus-solubilizing and dissolving bacteria, and antibiotics, but also adds various trace elements, which can prolong the effect of fertilizers and supplement the nutrients needed by the plants in various growth stages.

Most fertilizers are salts, which are acidic, alkaline, and neutral. Acidic, neutral fertilizers can be applied on saline ground. Alkaline fertilizers should be avoided on saline land. Such as urea, ammonium bicarbonate, ammonium nitrate, etc. in the soil does not remain any impurities, will not increase the salt and alkalinity in the soil, suitable for application in the saline-alkali land; ammonium sulfate is a physiological acidic fertilizer, which ammonium absorbed by the crop, Residual sulfate can reduce the alkalinity of salt and alkali, and it is also suitable for application; alkaline fertilizers such as grass ash are not suitable for application on saline-alkali soil; when applying phosphate fertilizer to saline-alkaline land crops, calcium superphosphate should be used. The calcium, magnesium and phosphate fertilizers are alkaline fertilizers. Applying them on the saline-alkali soil will not only have no effect, but will also lead to increased alkalinity of the soil. For the long-term application of alkaline fertilizers on the saline-alkali soil, it can be combined with the microbial fertilizer, microbial metabolites, such as indole acetic acid, cytokinin and gibberellic acid. It can effectively regulate the pH of the soil, promote the growth of roots, activate the leaching of fixed phosphorus and potassium elements in the soil, thereby increasing the utilization rate of fertilizers and reducing the phenomenon of soil salinization (salt and alkalinization).

Inorganic fertilizers combined with organic fertilizers can both supplement a variety of nutrients, reduce the concentration of soil solutions, and reduce the salt and alkali hazards that result from the application of chemical fertilizers. Fertilization should pay attention to several small-scale applications, so as to avoid a sudden high concentration of soil solution, affecting crop absorption and growth. Saline-alkali soils have low ground temperature, weakened microbial activity, and low release of available phosphorus. The combined application of microbial fertilizer can increase the amount of phosphorus released from the soil, which has a significant effect on increasing production.
Practice has proved that with the application of microbial fertilizer microbial fertilizer, can save about 30% of chemical fertilizers, and can increase fertilizer utilization. Details can be consulted: Beijing Huaxia Kangyuan Technology Co., Ltd. Tel free hotline Taobao buy microbial fertilizer Website: http://item.taobao.com/item.htm?spm=a1z10.5.w4002-4533113376.15.nxy726&id=15921764621

Recommended reading
1. Why humic acid can improve soil?
2. Description of Microorganism Organic Fertilizer Experiment Report

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