Rice straw compound fertilizer for improving saline-alkali lands

Abstract

The invention discloses a rice straw compound fertilizer for improving saline-alkali lands. The compound fertilizer is prepared from the following components in proportioning: 1000 parts of dry straws, 2000 parts of biogas slurry, 250-400 parts of urea, 60-80 parts of monopotassium phosphate, 60-90 parts of boric acid, 80-90 parts of chromium trichloride, 80-100 parts of manganese chloride, 120-140 parts of zinc sulfate, 12-15 parts of Trichodermaspp, 12-20 parts of Aspergillusflavus, and 20-30 parts of Polyangiumcellulosum. The preparation of the compound fertilizer comprises the following steps of: selecting the biogas slurry; implementing aerobic fermentation; implementing anaerobic fermentation; adding boric acid, chromium trichloride, manganese chloride and zinc sulfate in a fermentation tank and evenly mixing to obtain a mixture; and bagging for packaging the mixture.

Description

technical field [0001] The invention relates to a rice fertilizer, in particular to a rice straw compound fertilizer suitable for improving saline-alkali land. Background technique [0002] Rice is an important food crop and is moderately sensitive to salt stress. Salt is one of the important environmental factors affecting the growth and development of rice. Soil salinization along with the industrialization process and the scarcity of freshwater resources has become an urgent need for rice cultivation today. One of the important difficulties to break through; salt damage is the main abiotic stress that limits rice production, under saline conditions, its yield decreases, and salt-sensitive varieties are more affected by salt stress than salt-tolerant varieties; Large-volume crops require about 8 million tons of fertilizer annually, accounting for 17-20% of China's chemical fertilizer consumption. However, long-term single application of chemical fertilizers will cause long...

AI Technical Summary

Problems solved by technology

[0002] Rice is an important food crop and is moderately sensitive to salt stress. Salt is one of the important environmental factors affecting the growth and development of rice. Soil salinization along with the industrialization process and the scarcity of freshwater resources has become an urgent need for rice cultivation today. One of the important difficulties to break through; salt damage is the main abiotic stress that limits rice production, under saline conditions, its yield decreases, and salt-sensitive varieties are more affected by salt stress than salt-tolerant varieties; Large-volume crops require about 8 million tons of fertilizer annually, accounting for 17-20% of China's chemical fertilizer consumption. However, long-term single application of chemical fertilizers will cause long-term problems such as soil compaction, nutrient imbalance, and poor physical properties, and the production capacity will be significant. decrease, and the fertilizer efficiency of organic fertilizers is slow. At the same time, most of the crop straws, leaves, and weeds in the prior art are directly burned in the field to avoid affecting the cultivated land; although this treatment method is simple, it is harmful to the beneficial microorganisms in the soil. The damage is serious, which is not conducive to the growth of crops; in addition, the carbon in the straw accounts for the vast majority, followed by potassium, silicon, calcium, magnesium, sulfur, and phosphorus. The products after incineration mainly include CO 2 , CO, SO 2 , NO 2 and N 2 O, these harmful gases have caused serious environmental pollution after entering the atmosphere; if these straws are composted and returned to the field, they will become rich organic fertilizers to fertilize the soil and improve soil properties; microbial degradation of straw cellulose is through secretion into the cell External free cellulase, which degrades cellulose with hydrolase mechanism and oxidase mechanism; the use of microorganisms can finally decompose cellulose into CO 2 and H 2 0, and a large amount of bacterial protein can be produced through the growth of microorganisms themselves, so the use of microbial methods to treat straw can greatly improve its nutritional value