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A kind of fertilizer composite film material and slow-controlled release fertilizer suitable for ratooning rice in southern red soil area

A slow-controlled-release fertilizer and rice regeneration technology, applied in the ecological environment and agricultural fields, can solve problems such as no reports and records, and achieve the effects of improving fertility, improving fertilizer utilization, and improving soil fertility.

Active Publication Date: 2021-11-05
INST OF SOIL FERTILIZER & RESOURCE ENVIRONMENT JIANGXI ACAD OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the research on slow and controlled release fertilizers for ratooning rice in my country has started. Although there are a few reports, there are no reports or records about the development and application of slow and controlled release fertilizers for ratooning rice in southern red soil rice fields.

Method used

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  • A kind of fertilizer composite film material and slow-controlled release fertilizer suitable for ratooning rice in southern red soil area
  • A kind of fertilizer composite film material and slow-controlled release fertilizer suitable for ratooning rice in southern red soil area
  • A kind of fertilizer composite film material and slow-controlled release fertilizer suitable for ratooning rice in southern red soil area

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Preparation of fertilizer composite film:

[0046] (1) Preparation of acid-modified sodium methyl silicate: Weigh sodium methyl silicate to prepare an aqueous solution of sodium methyl silicate with a concentration of 10%-15%; dilute ethanolamine evenly with water according to the ratio of 6:1, Slowly add it into the sodium methyl silicate solution under high-speed stirring; then, according to the ratio of 10:1, dilute the sulfuric acid with water evenly, add slowly, adjust the pH value of the sodium methyl silicate solution to 11-13, and obtain the acid modification Sodium methyl silicate.

[0047] (2) Preparation of composite coating material: according to the ratio of 10:1, water and chitosan were added in a beaker, and stirred for 5-10min; %wt of acid-modified sodium methyl silicate, 0.3%wt of emulsified silicone oil, continue to stir, add 0.2%wt of magnesium oxide, and ultrasonically stir and disperse for 30-40min to obtain a slurry. When the stirring speed is sl...

Embodiment 2

[0057] Coating of slow and controlled release fertilizers for 60 days: use LDP5 fluidized granulation coating dryer (small fluidized bed equipment). The main parameters are: ①air seal pressure: 0.25kpa~0.3kpa; ②atomization pressure regulation: 0.15kpa~0.2kpa; ③coating time: 30min~40min; ④inlet air temperature: 40℃~80℃; ⑤outlet temperature : 30℃~60℃; ⑥Flow rate of peristaltic pump: 8~11r / min.

[0058] Coating of 90-day slow and controlled release fertilizer: LDP5 fluidized granulation coating dryer (small fluidized bed equipment) is used. The main parameters are: ①air seal pressure: 0.25kpa~0.3kpa; ②atomization pressure adjustment: 0.15kpa~0.2kpa; ③coating time: 50min~60min; ④inlet air temperature: 40℃~80℃; ⑤outlet temperature : 30℃~60℃; ⑥Flow rate of peristaltic pump: 10~13r / min.

[0059] Coating of 120-day slow and controlled release fertilizer: LDP5 fluidized granulation coating dryer (small fluidized bed equipment) is used. The main parameters are: ①air seal pressure: 0....

Embodiment 3

[0066] Humic acid compound fertilizer with a formula of "nitrogen-phosphorus-potassium" of 20:10:18 was selected as the basic fertilizer, and 30% quick-acting humic acid compound fertilizer (that is, no coating) + 30% coated fertilizer (60 days slow Controlled release) + 30% coated fertilizer (90 days slow and controlled release) + 10% coated fertilizer (120 days slow and controlled release). Before the transplanting of ratooning rice (for example, variety Yongyou 4949), it is applied once as a base fertilizer, and topdressing is no longer required throughout the growth cycle.

[0067] Above-mentioned coated fertilizer is the obtained coated fertilizer of embodiment 2.

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Abstract

The invention belongs to the fields of agriculture and ecological environment, and discloses a fertilizer composite film material and a special slow-controlled release fertilizer for ratooning rice suitable for southern red soil regions. The special slow-controlled release fertilizer for regeneration rice suitable for southern red soil paddy fields of the present invention contains quick-acting humic acid compound fertilizer and coated fertilizer, wherein the mass ratio of quick-acting humic acid compound fertilizer and coated fertilizer is 2.5-3.5:6.5 ~7.5, the fertilizer formula of the quick-acting humic acid compound fertilizer and the coating fertilizer is nitrogen: phosphorus: potassium=18~22:9~11:16~20, and the coating fertilizer is acid-modified methyl silicon A fast-acting humic acid compound fertilizer that uses sodium nitrate as the membrane material coating. Compared with the special fertilizer for ordinary rice, the product of the invention can effectively improve the grain yield and fertilizer utilization rate of ratooned rice. 3-year field test results show that the product of the invention increases yield by 8-15% compared with the special fertilizer for common ratooning rice, and its fertilizer application amount is reduced by more than 10% compared with the special fertilizer for common rice.

Description

technical field [0001] The invention relates to the fields of agriculture and ecological environment, in particular to a fertilizer composite film material and a special slow-controlled release fertilizer for ratooning rice suitable for southern red soil regions. Background technique [0002] Regeneration rice, that is, after the first season of rice matures, only about 2 / 3 of the rice plant is cut off, and the rice ears are harvested, and the 1 / 3 of the plants and roots are left behind, and the cultivation is continued, and the rice piles re-emerge, grow ears and bloom After about 2 months, the rice will mature, and the second season will be harvested, which is also called "one kind of two harvests". [0003] Planting ratooning rice reduces the links of seedling raising, whole field, transplanting, etc., and can save 60% of the production cost. At the same time, it solves the problems of labor, animal power, and mechanical farming in the "double rush" of rice planting areas...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C05G3/40C05G3/80C05G5/30
CPCC05D1/00C05G3/40C05G3/80C05G5/37C05F11/02
Inventor 冯兆滨刘秀梅冀建华侯红乾刘益仁吕真真蓝贤瑾夏文建刘光荣彭春瑞李祖章
Owner INST OF SOIL FERTILIZER & RESOURCE ENVIRONMENT JIANGXI ACAD OF AGRI SCI