Biological method for improving available nutrients in paddy field by utilizing limnodrilus

A technology of quick-acting nutrients and water worms, applied in the fields of botanical equipment and methods, rice cultivation, fertilization methods, etc., can solve the problems of rice resistance and quality decline, soil quality decline, fertilizer loss, etc., and improve soil physical and chemical properties. , Simple operation, the effect of reducing the amount of chemical fertilizer

Inactive Publication Date: 2009-10-14
长春师范学院 +2
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Problems solved by technology

[0004] [Technical problem to be solved] In order to solve the disadvantages of a large number of concentrated fertilization, low fertilizer efficiency, serious loss and residue of fertilizer, soil quality reduction, rice resistance and quality decline in the existing fertilization methods, the present invention provides a method for improving the availab

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  • Biological method for improving available nutrients in paddy field by utilizing limnodrilus

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[0011] The specific examples were carried out in the rice fields of Xujia Village, Sheling Town, Shuangyang District, Changchun City, Jilin Province from April to September 2007. The rice seed was "Jijing 88" (selected by the Jilin Academy of Agricultural Sciences). In late May, every 0.067hm 2 Raise 30kg of water silkworm species in the rice field, and do a good job of water level management, safety protection and water temperature control. Water silk worms are harvested as earthworms for the first time after 60 days of stocking, and sold as earthworms for the second time before rice harvesting. The rice is harvested at the end of September.

[0012] In the beginning of tillering, peak tillering, young panicle differentiation, booting, full heading, and maturity stages of rice, the soil available nitrogen content in the earthworm-growing rice field was 1.62%, 1.94%, 0.56%, and 2.19 respectively higher than that of the control rice field (CK) %, 4.80%, 4.28%, the soil available ph...

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Abstract

The invention belongs to nutrient regulation methods in the field of ecological agriculture, in particular to a biological method for improving available nutrients in a paddy field by utilizing limnodrilus. The biological method aims at solving the defects of prior centralized fertilization of the paddy field, low fertilizer efficiency, serious fertilizer loss and residues, environmental pollution and the like; the limnodrilus is stocked in the paddy field at appropriate time for carrying out water level management and safety protection; a supply source of the available nutrients is formed by the physiological metabolism and the disturbance behavior of the limnodrilus, thereby accelerating soil nutrient cycle, increasing soil available nutrient content and realizing biological fertilizer retention, the fertilizer conservation, the production increase and the yield increase. The biological method effectively reduces the fertilizer application amount, protects the biological diversity of the paddy field, fully utilizes land and water resources for carrying out the ecological regulation, reduces environmental pollution and increases the comprehensive economic benefits of the paddy field. The biological method has low investment cost, rich raw material resources, simplicity, easy operation and broad application prospect. The biological method is applicable to the regulation and the controlled release of the available nutrients in the paddy rice production.

Description

Technical field [0001] The invention relates to a method for improving paddy field nutrients by using waterworms, which is a biological method for improving paddy field soil available nutrients in the field of ecological agriculture. Background technique [0002] my country is the largest rice producing and rice consuming country in the world, and 2 / 3 of the residents in the country take rice as a staple food, and the rice planting area and output account for about 30% and 40% of my country's grain planting area and output (Chen Wu et al. Talking about the development prospects and strategies of rice industry in my country. Construction of Old Areas, Issue 20, 2008). From the perspective of current rice production practice, fertilization in paddy fields generally uses a combination of chemical fertilizers and farmyard manures. Base fertilizers are applied before harrowing, and then topdressing is carried out at different growth stages of rice according to actual conditions, i...

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Application Information

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IPC IPC(8): A01G16/00A01C21/00A01G22/22
Inventor 孙刚刘保垣房岩孙振雷安永辉韩国军付艳苹胡佳林
Owner 长春师范学院
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