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Water-saving and high-yield water and fertilizer management method for corn

A water and fertilizer management, corn technology, applied in the direction of fertilization methods, soil preparation methods, botanical equipment and methods, etc., can solve the unfavorable utilization efficiency of water and fertilizer resources in corn yield potential, lack of technical support for water and fertilizer coordinated management, insufficient irrigation and fertilization Reasonable and other issues, to achieve the effect of improving water use efficiency, improving nutrient use efficiency, and overcoming unbalanced nutrient supply

Active Publication Date: 2014-07-02
XINJIANG ACADEMY OF AGRI & RECLAMATION SCI
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Problems solved by technology

[0004] However, in the current technical measures of drip irrigation corn cultivation, the layout of drip pipes in the field is different, the amount of irrigation water and fertilizer is not reasonable, and the coordinated management of water and fertilizer lacks technical support, which is extremely important for tapping the yield potential of corn and improving the utilization efficiency of water and fertilizer resources. unfavorable

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  • Water-saving and high-yield water and fertilizer management method for corn

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Effect test

Embodiment 1

[0036] Step 1, sowing and water irrigation for emergence: corn is sown at intervals of 30 in narrow rows and 90 cm in wide rows (such as figure 1 Shown); the middle of the narrow row is used to lay the drip irrigation belt, one pipe and two rows, the flow rate of the drip pipe is 2.8L / h; after the sowing was completed on April 28, 2012, the seedling water was uniformly dripped on May 1, and the irrigation volume was 18m 3 , the wet front was 15cm beyond the corn sowing row, and corn seedlings emerged on May 6.

[0037] Step 2. Irrigation and regulation of the first water after emergence: on June 21, until the upper leaves of the young corn plants are rolled up, and the soil water content is lower than 60% of the maximum water holding capacity in the field, irrigation is carried out. According to the soil moisture, every 667m 2 Drip 32m 3After two hours of dripping water, apply 8kg of special fertilizer for corn drip irrigation Type I along with the dripping water.

[0038] S...

Embodiment 2

[0043] Step 1. Irrigation with water for sowing and emergence: corn is sown with row intervals ranging from 30+90cm; drip irrigation belts are laid in the middle of the narrow rows, with one tube and two rows, and the flow rate of the drip tube belt is 2.8L / h; May 1, 2013 After the sowing is completed, the seedling water will be dripped uniformly on May 7, and the irrigation volume will be 20m 3 , the wet front exceeded the corn sowing row by 16cm, and corn seedlings emerged on May 15.

[0044] Step 2. Irrigation and regulation of the first water after emergence: on June 23, until the upper part of the leaves of the young corn plants are rolled up, and the soil water content is lower than 58% of the maximum water holding capacity in the field, irrigation is carried out. According to the soil moisture, every 667m 2 Drip 36m 3 After two hours of dripping water, apply 9kg of special fertilizer for corn drip irrigation Type I along with the dripping water.

[0045] Step 3, Ferti...

Embodiment 3

[0051] Step 1, sowing and emergence water irrigation: corn is sown with 40+80cm row intervals; the middle of the narrow rows is used to lay drip irrigation belts, one tube with two rows, and the flow rate of drip tubes is 2.4L / h; April 20, 2013 After the sowing is completed, the seedling water will be dripped uniformly on April 24, and the irrigation volume will be 16m 3 , the wet front exceeded the corn sowing row by 18cm, and corn seedlings emerged on May 4.

[0052] Step 2. Irrigation and regulation of the first water after emergence: On June 13, until the upper part of the leaves of the young corn plants rolled up, and the soil water content was lower than 62% of the maximum water holding capacity in the field, irrigation was carried out. According to the soil moisture, every 667m 2 Drip 35m 3 ; After two hours of dripping water, apply 10kg of special fertilizer for corn drip irrigation Type I along with the dripping water.

[0053] Step 3, fertilizer application and irr...

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Abstract

The invention discloses a water-saving and high-yield water and fertilizer management method for corn. The method comprises the first step of sowing and irrigating after seedling emergence, wherein the corn is sowed in the mode of alternating wide row spacing and narrow row spacing; the second step of irrigating and regulating of first irrigating after the seedling emergence; the third step of fertilization and irrigation regulation in a fertility interim, wherein from the small bell stage to the heading stage, the soil water content is kept to account for 70 percent-80 percent of the maximum water holding capacity of a field through drip irrigation; the fourth step of fertilization and irrigation regulation in the fertility middle and later periods, wherein from the flowering stage to the milk-ripe stage, the soil water content is kept to account for 80 percent-90 percent of the maximum water holding capacity of the field through the drip irrigation; the fifth step of water and fertilizer management before harvesting, and the sixth step of harvesting through a selected suitable harvesting machine, wherein corn stalks are smashed through a machine and returned to the field. According to the management method, the purposes of being high yield and quality, saving water and fertilizer and efficiently utilizing water and fertilizer resources in corn production are achieved under the condition of the drip irrigation and fertilizer application with the water.

Description

technical field [0001] The invention belongs to the technical field of corn planting, and in particular relates to a water-saving and high-yield water and fertilizer management method for corn. Background technique [0002] Corn production has an important position and role in my country's grain production. In the "National Plan for Adding 100 Billion Jin of Grain Production Capacity (2009-2020)", corn undertakes 44.1% of the tasks. It can be seen that corn production is directly related to China. food security. Corn drip irrigation technology is a new type of food crop irrigation technology developed on the basis of cotton drip irrigation technology; due to its high efficiency and water saving characteristics, corn drip irrigation technology has begun to be widely used in agricultural production in recent years. The effects of water and production increase have been fully verified, and the production level has reached 13500-21000kg / hm 2 . [0003] Through the research and...

Claims

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Application Information

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IPC IPC(8): A01G1/00A01G25/00A01C21/00A01B79/00
Inventor 梁飞曾胜和陈云郭斌王国栋张鑫高志建
Owner XINJIANG ACADEMY OF AGRI & RECLAMATION SCI
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