Compound modifying agent for saline and alkaline land and preparation and application methods thereof

Abstract

The invention discloses a compound modifying agent for saline and alkaline land and preparation and application methods thereof. The compound modifying agent is prepared from, by weight, 30-40 parts of ardealite, 20-30 parts of humic acid, 30-40 parts of pressed oil waste residues, 5-10 parts of amino acid, 4-7 parts of borax, 5-10 parts of ammonium ferrous sulfate, 5-10 parts of zinc sulfate, 4-6 parts of manganese slag and 3-5 parts of a microbial agent. The compound modifying agent contains rich humic acid, trace elements and amino acid, can improve the soil fertility and the soil structure, decrease the capillary water movement speed and reduce useless evaporation of water, has an obvious salt return inhibiting effect, has the high exchange capacity and can adsorb harmful ions such as Na<+>, SO4 <2-> and Cl<->, decrease the PH and alkalization degree of the soil and improve the exchange capacity of the soil.

Description

technical field [0001] The invention relates to a improver, in particular to a compound improver which is mainly used in the improvement and restoration of saline-alkali land. Background technique [0002] Saline-alkali land improvement, as a worldwide problem, has received unanimous attention from experts and scholars at home and abroad for many years. Due to the defects of high salt content, poor structure and low fertility in saline-alkali soil, it is difficult to carry out agricultural production without improvement and treatment, which greatly limits the effective use of land resources in this area. With the continuous deepening of regional economic development, ecological problems have become increasingly prominent, especially the problem of land salinization, which seriously restricts the development of regional agriculture. [0003] According to incomplete statistics, my country has 99.13 million hectares of saline-alkali land, distributed in 23 provinces, municipal...

AI Technical Summary

Problems solved by technology

[0006] Aiming at the deficiencies in the prior art, the technical problem to be solved by the present invention is to provide a compound improver for saline-alkali land and its preparation and application method, which solves the problem of poor improvement effect of saline-alkali land improvement methods in the prior art and low soil organic matter content after improvement. , the phenomenon of returning to alkali, improve the emergence rate of crops, promote crop growth and increase production