Cotton straw compound fertilizer for slowly releasing low-temperature stress

Abstract

The invention discloses a cotton straw compound fertilizer for slowly releasing low-temperature stress. The cotton straw compound fertilizer is prepared from the following components in parts by weight: 1000 parts of dry straws, 2000 parts of biogas slurry, 200-300 parts of urea, 50-70 parts of monopotassium phosphate, 40-60 parts of boric acid, 40-50 parts of chromium trichloride, 50-80 parts of manganese chloride, 100-120 parts of zinc sulfate, 12-20 parts of polyaspartic acid, 12-20 parts of aspergillus flavus, 9-15 parts of micromonospora and 20-30 parts of polyangium cellulosum. The cotton straw compound fertilizer is prepared through the following steps of: selecting biogas slurry which can normally generate methane; implementing aerobic fermentation; implementing anaerobic fermentation; adding boric acid, chromium trichloride, manganese chloride, zinc sulfate and polyaspartic acid to form a mixture; evenly mixing the mixture; bagging and packaging the mixture.

Description

technical field [0001] The invention relates to a cotton fertilizer, in particular to a slow-release low temperature stress cotton stalk compound fertilizer. Background technique [0002] Cotton is an important economic crop. Low temperature chilling injury and frost are one of the important disasters that threaten cotton. Cotton is a heat-loving crop. The planting area in my country is vast, but the heat conditions vary greatly from place to place, especially in the northern cotton area and the northwest inland cotton. The thermal conditions in the area are relatively poor, and the temperature in spring and autumn is often very unstable, so that the cotton seedling stage (mid-late April to mid-May) and boll-opening stage (September-October) are often harmed by late frost and early frost. Among them, late frost at the seedling stage occurs more frequently, and long-term single application of chemical fertilizers will cause long-term problems such as soil compaction, nutrient i...

AI Technical Summary

Problems solved by technology

[0002] Cotton is an important economic crop. Low temperature chilling injury and frost are one of the important disasters that threaten cotton. Cotton is a heat-loving crop. The planting area in my country is vast, but the heat conditions vary greatly from place to place, especially in the northern cotton area and the northwest inland cotton. The thermal conditions in the area are relatively poor, and the temperature in spring and autumn is often very unstable, so that the cotton seedling stage (mid-late April to mid-May) and boll-opening stage (September-October) are often harmed by late frost and early frost. Among them, late frost at the seedling stage occurs more frequently, and 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 decrease significantly. and leaves, weeds, etc., are mostly directly burned in the field to avoid affecting the cultivated land; although this treatment method is simple, it seriously damages the beneficial microorganisms in the soil and is not conducive to the growth of crops; Most of them, followed by potassium, silicon, calcium, magnesium, sulfur, phosphorus, and 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; polyaspartic acid is a polymer of amino acids, a water-soluble polypeptide , biodegradable, has a certain biological activity, it acts as a fertilizer synergist, can absorb and enrich the elements in the soil that are beneficial to plant growth, and can improve the utilization rate of fertilizers