Fertilizer containing rare-earth element for saline-alkali soil land and application of fertilizer in planting of nitraria tangutorum

Abstract

The invention provides a fertilizer containing rare-earth elements for a saline-alkali soil land and application of the fertilizer in planting of nitraria tangutorum. The fertilizer comprises the following components: maleic anhydride, manganese carbonate, sodium molybdate, ammonium phosphate, amino acid salt, fulvic acid, humic acid, ammonium citrate, glycolic acid, calcium nitrate, magnesium sulfate, zinc sulfate, zinc sulfate and lanthanum nitrate. By adopting the fertilizer provided by the invention, severely salinized soil in planting areas can be effectively improved, the salt content in a 0-30cm soil layer can be reduced to 0.23-0.26% from 1.0-1.4%, the pH value of soil is reduced to 7.2-7.4% from 8.2-8.5%, the content of humus in soil is 0.65-0.78g / kg, the content of total nitrogen in soil is 0.101-0.128%, and the content of microorganisms is increased by 50-60%.

Description

technical field [0001] The invention provides a fertilizer and its application in the planting of Nitraria, in particular to a fertilizer containing rare earth elements for saline-alkali land and its application in the planting of Nitraria, belonging to the technical field of soil fertilizers. Background technique [0002] my country's coastline is long, and the soil near the coast is affected by long-term erosion and immersion of seawater, which can easily lead to soil salinization. Over the years, coupled with factors such as sediment and sandy soil, many coastal soils are severely salinized. [0003] In recent years, many areas have been improving these heavily salinized soils, but the effect is not satisfactory; the main treatment methods include: 1. Drainage method. For low-lying saline-alkali land, drainage ditches can be dug to discharge surface water. Take away some of the soil salt. 2. Irrigation and salt washing method. According to the law of "salt comes with wat...

AI Technical Summary

Problems solved by technology

[0004] However, these methods have certain limitations, and cannot effectively solve the obstacles of plant growth in saline-alkali soil.

Specifically, there are the following defects: 1. The effect of reducing soil salinity is not obvious; 2. It is difficult to reduce pH and salinity at the same time, and maintain a low level for a long time; 3. It is difficult to improve soil salinization while , to make the soil fertile and ensure the normal growth of plants; if vegetation cannot be planted, the salinization of sandy soil cannot be changed for a long time

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