Saline-alkali soil fertilizer

Abstract

The invention relates a soil improvement fertilizer containing microorganism, inorganic nutrients, organic matters and a water retention agent, specifically aiming at the saline-alkali soil in Binzhou city, Shandong Province. The organic matters and the water retention agent are beneficial to improving the structure of the soil and increasing the water retention ability effectively, thus providing good growing conditions for the growth of microorganism and crops. Through the complementary mutual benefit of the selected nitrogen-fixing bacteria, photosynthetic bacteria, phosphorus-potassium dissolving bacteria and escherichia coli on metabolism, not only can the addition of an inorganic fertilizer be saved, but also the soil quality not easily utilized in soil can be developed. At the same time, adding different proportions of inorganic nutrients depending on the soil composition can not only acquire the basic nutrients for the crops, but also reduce the waste of nutrients. Long-term application of the fertilizer can improve the soil environment fundamentally, thereby achieving the purpose of transforming the saline-alkali soil.

Description

technical field [0001] The invention relates to an agricultural chemical fertilizer, in particular to a fertilizer for improving saline-alkali land. Background technique [0002] Binzhou City is located at the inner edge of the fan-shaped area of ​​the Yellow River Delta, bordering the Yellow River on the inside and the Bohai Sea on the outside. Its soil can be divided into three categories: alkaline soil, saline soil and sandy soil. The closer it is to the Yellow River Basin, the lower its salinity. The average chemical analysis composition of these three soils is shown in Table 1 [0003] Table 1 Analysis results of three soil chemical components (%) [0004] Soil type saline soil Alkaline soil sand K 2 o 2.57 2.80 2.54 Na 2 o 3.55 1.59 2.21 Cl - 0.69 0.17 0.09 CaO 6.39 11.13 5.44 MgO 3.50 5.21 2.28 Fe 2 o 3 4.79 3.84 4.33 Al 2 o 3 9.36 4.77 6.74 SiO 2 52.89 31.18 65.11 [0005] ...

AI Technical Summary

Problems solved by technology

If chemical fertilizers are used alone for a long time, the soil will have adverse effects on soil quality and the environment

In the absence of sufficient organic matter in the soil, the aggregate structure is difficult to form, and the adhesion between soil particles is weakened, thereby reducing the water retention capacity of the soil; Nutrients are released under environmental conditions

In addition, the excessive use of chemical fertilizers will also have a serious impact on the environment

When excessive chemical fertilizers are applied, the nutrients that are not absorbed by the soil will be lost with the water, causing excess nutrients in the nearby water sources, accelerating the growth of algae, and affecting the entire ecosystem

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