Soil conditioner for avoiding soil hardening and reducing salt damage and preparing method thereof

Abstract

The invention discloses a soil conditioner for avoiding soil hardening and reducing salt damage and a preparing method thereof. The soil conditioner is prepared from grass peat, biogas residues, meatbone meal, calcium humate, phosphomolybdic acid, thiourea, monopotassium phosphate, magnesium peroxide, a microbial agent, sodium alginate and raw traditional Chinese medicine materials, wherein the raw traditional Chinese medicine materials comprise fructus meliae azedarach, herba belladonnae, folium perillae, rhizoma acori graminei, rhizoma sinomeni cauliset, radix morindae officinalis and rhizoma cynanchi stauntonii. The preparing method comprises the steps of material selection, impurity removal, grinding, drying, uniform mixing and the like. According to the soil conditioner, the composition of the conditioner is considered from the aspect of nutrient balance, and the number of silfate ions causing soil hardening in the conditioner is also reduced; meanwhile, calcium humate promotingthe formation of soil granule structures is added, after application, soil is looser and more porous, the occurrence of soil hardening is reduced, the production cost is reduced, the growth of root systems of crops is promoted, yield increasing is obvious, the soil conditioner has the effect of preventing soil hardening, and the improvement of the soil structure is promoted.

Description

technical field [0001] The invention relates to the technical field of soil improvement, in particular to a soil conditioner for improving soil compaction and reducing salt damage and a preparation method thereof. Background technique [0002] Soil compaction refers to the phenomenon that the surface layer of the soil is poor in structure due to the lack of organic matter, and the structure is destroyed and the soil material is dispersed under the action of external factors such as irrigation or rainfall, and the soil surface is hardened by the cohesive force after drying. There are about seven main factors for soil compaction: (1) The soil texture of the farmland is heavy and the clay content in the shallow clay in the cultivated layer is relatively large. In addition, the average cultivated layer is less than 20cm, and the capillary pores in the soil are less, which is aerated and permeable. 1. The warming performance is poor, and the soil aggregate structure is destroyed,...

AI Technical Summary

Problems solved by technology

There are about seven main factors for soil compaction: (1) The soil texture of the farmland is heavy and the clay content in the shallow clay in the cultivated layer is relatively large. In addition, the average cultivated layer is less than 20cm, and the capillary pores in the soil are less, which is aerated and permeable. 1. The warming performance is poor, and the soil aggregate structure is destroyed, resulting in crusting on the soil surface; (2) The input of organic materials is small, no organic fertilizer is applied or peat is returned to the field, so that the organic matter in the soil is insufficiently supplemented, and the soil organic matter content is low. The deterioration of physical and chemical properties will affect the activity of microorganisms, thereby affecting the formation of soil aggregate structure, causing the acidity and alkalinity of the soil to be too large or too small, resulting in soil compaction; It cannot be completely decomposed in the soil and forms harmful lumps. The waste plastics that enter the landfill with domestic waste in China every year account for 3% to 5% of the weight of landfill waste, most of which are plastic bag waste. (4) Long-term single partial application of chemical fertilizers is seriously insufficient, heavy nitrogen and light phosphorus and potassium fertilizers, soil organic matter declines, humus cannot be replenished in time, causing soil compaction and cracks, long-term application of sulfuric acid Ammonium is also easy to cause soil compaction; (5) Agricultural measures such as suppression and plowing lead to the destruction of the upper soil structure. Due to the influence of mechanical tillage, the soil aggregate structure is destroyed, and the conditioner applied to the soil every year is only partly absorbed by the crops of the season Use, the rest is fixed by the soil, forming a large amount of salt deposits, causing soil compaction, improper cultivation timing, such as plowing and suppression when the soil is too wet, it is easy to cause compaction; (6) Accumulation of harmful substances in some local groundwater and industrial wastewater. High content, long-term use of irrigation, excessive accumulation of toxic substances will cause surface soil compaction; (7) Soil erosion caused by heavy rains After heavy rains, fine soil particles in the topsoil layer are taken away, destroying the soil structure; while clay and small particles accumulate It is easy to form compaction after the sediment dries up in the water place or the slow flow place

[0003] Compaction reduces the water absorption, oxygen absorption and nutrient adsorption capacity of the soil, and the decrease in permeability causes the root system of crops to be poorly developed, affecting the growth and development of crops

Under the condition of soil compaction, the soil porosity is reduced, the permeability is poor, and the ground temperature is lowered, so that the activities of aerobic microorganisms in the soil are inhibited, the water, air, and heat conditions cannot be well coordinated, and its fertilizer supply, fertilizer, and water retention capabilities are weak.

Soil compaction also delays the decomposition of organic matter, soil physical and chemical properties gradually deteriorate, soil fertility gradually declines, and soil fertility declines, which cannot well meet the needs of wheat growth and development.

Under the condition of soil compaction, the respiration of the root cells of crops is weakened, and nutrients such as nitrogen exist in the ion state, and the absorption is mostly in the form of active transport, which needs to consume the energy produced by cell metabolism, and the respiration is weakened, so the energy supply is insufficient, affecting absorption