Water retention agent for arid/semiarid region farmland soil

Abstract

The invention provides a water retention agent suitable for arid / semiarid region farmland soil. The invention is technically characterized in that the water retention agent is prepared from 2-8 parts of polyvinyl alcohol, 0.5-1 part of dodecyl fatty alcohol polyoxyethylene (3) ether ammonium sulfate, 0.1-0.5 part of dodecyl alcohol polyoxyethylene (9) ether, 0.001-0.008 part of triacontanol, 0.1-0.5 part of n-octanol, 5-15 parts of polyacrylic acid, 2-10 parts of ammonium monoacid phosphate, 2-5 parts of potassium sulfate, 2-10 parts of fulvic acid, 0.01-0.05 part of indolebutyric acid, 1-3 parts of magnesium sulfate and 40-55 parts of water. The water retention agent is prepared by the following steps: weighing the components in parts by weight, mixing at the room temperature of 20-25 DEG C, sufficiently stirring for 40-60 minutes to form a uniform mixture, and filtering to obtain the finished product. After the amount of precipitation reaches more than 20mm, the water retention agent is sprayed on the ground surface with a sprayer. The invention is suitable for the demands of soil loosening and water retention for arid / semiarid region farmland soil, removes the soil hardening, loosens the soil, improves the air permeability, promotes the formation of the crumb structure, breaks the farmland plough pan, increases the plough layer depth, enlarges the storage capacity of the soil reservoir, and enhances the water-holding capacity of soil.

Description

technical field [0001] The invention relates to a conditioner for farmland soil and its compound mixture of chemical fertilizers, in particular to a water-retaining agent for farmland soil in arid and semi-arid areas. Background technique [0002] China's arid and semi-arid areas account for more than half of the country's land area, located in the north of the Kunlun Mountains-Qinlings-Huaihe River, including 15 provinces, municipalities and autonomous regions in the north. 37.5%, 58% and 40% of the output, the region has a vast territory, resource-related water shortages are prominent, the average annual precipitation is 300-700 mm, 70%-80% of the rainfall occurs from June to September, and the spring drought is very serious , due to climate and man-made reasons, soil desertification and degradation are serious, crop yields are low and unstable, precipitation utilization rate is generally only about 45% to 50%, and the penetration rate of dry farming water-saving technolog...

AI Technical Summary

Problems solved by technology

The effect of soil loosening is achieved by applying chemical preparations, which overcomes the difficulty of simultaneously solving the problem of physical deep loosening and chemical water retention in existing preparations. The process realizes water retention in time, and enables the water retaining agent to have the effect of water storage. It provides a new product for maximizing the use of precipitation and soil water, and provides a multifunctional farmland soil water retaining agent for arid and semi-arid areas.