37results about How to "Improve soil" patented technology

The invention relates to a saline soil restoration material for weathered coal soil and a preparation method thereof. The restoration material consists of the following elements: weathered coal: 55 to 65 portions; monoammonium phosphate: 10 to 12 portions; carbamide: 2 to 6 portions; ferrous sulfate: 2 to 6 portions; zinc sulphate: 1 to 4 portions; manganous sulfate: 1 to 3 portions; calcareous adhesive: 5 to 15 portions and dilute nitric acid: 15 to 30 portions. The saline soil restoration material can be used as basic fertilizer or additional manuring. The saline soil restoration material for weathered coal soil can neutralize soil alkalinity, and the active calcium ion contained can replace the sodium ions absorbed on soil colloids which can be washed out of soil by rain water or irrigation water. The invention can raise the organic content in alkalization soil, make up for the insufficiency of the contents of the medium elements and trace elements in alkalization soil, and the active humic acid contained in the saline soil restoration material can promote plants to grow fast.

The invention relates to an application of a highly alkalized soil improvement agent in improving soil. The highly alkalized soil improvement agent comprises the following raw materials in parts by weight: 88-92 parts of desulfurized waste, 1-3 parts of inorganic accelerator, and 5-11 parts of organic accelerator. The highly alkalized soil improvement agent provided by the invention has the beneficial effects that calcium ions in the desulfurized waste are used to replace exchangeable sodium on the densityalkalized soil colloid, thus reducing the alkalization degree of the densityalkalized soil; at the same time, the excellent pore structure and physical property of the organic accelerator are used to improve the physical property of the soil and the granular structure of the soil, reduce the pH value of the soil, and improve the soil fertility; the inorganic accelerator can also improve the granular structure of the soil; in addition, with auxiliary inorganic fertilizer and organic fertilizer, the soil fertility of the soil can be further improved so as to provide nutrient contents for plant growth. To sum up, by adopting the scheme in the invention, unbalance of nutritive elements in the soil can be effectively overcome, the land capability is improved, the soil is loosened, and the fertilizer efficiency is increased, so that the soil salinization phenomenon is fundamentally harnessed step by step.

The saline-alkaline land modifier consists of dehydrated calcium sulfate 10-60 weight portions, anhydrous calcium sulfate 5-10 weight portions, pyrite 1-5 weight portions, oxalic acid 5-10 weight portions, phosphorus 5-8 weight portions, potassium 1-3 weight portions, and trace elements 1-4 weight portions. All the materials are ground to 120 meshes and mixed into the saline-alkaline land modifier. The saline-alkaline and modifier can reduce soil pH value, balance nutritive elements, improve soil fertility, loosen soil, increase fertilizer effect and absorb and release water to regulate moisture of soil, so that it may be used to increase yield, tackle saline-alkaline land, improve ecological environment.

The invention relates to a gel type saline soil conditioning fertilizer. The fertilizer comprises raw materials in parts by weight as follows: 15-25 parts of cellulose derivatives, 20-30 parts of amino acid, 2-5 parts of cyclodextrin, 0.1-0.5 part of citric acid powder, 10-14 parts of a nitrogenous fertilizer, 20-24 parts of a phosphate fertilizer and 12-16 parts of a potash fertilizer. The gel type saline soil conditioning fertilizer has multiple effects, the used cellulose derivatives and the used cyclodextrin are non-toxic, environment-friendly and degradable, and the fertilizer can form stable hydrogel after being applied to soil and absorbing a large amount of water, so that the water absorbing capacity of the soil can be improved, meanwhile, the fertilizer has the better water retention capacity, evaporation of moisture in the soil can be slowed down, the stored moisture is released slowly, the growth of crops is promoted, and the pH value of the saline soil can be reduced; the cellulose derivatives can adsorb base ions harmful to the crops in the soil, can stimulate growth of roots of the crops, are used as a coating material of the fertilizer to enable the fertilizer to be released slowly in the soil.