Method for regulating and controlling root system architecture of under-mulch-drip irrigation cotton in sand through irrigation and nitrogen application

A root system configuration and cotton technology, applied in fertilization methods, botanical equipment and methods, fertilization devices, etc., can solve the problems of premature aging and hollowing of cotton, reduce the decline of cotton root length and density, increase cotton yield, and reduce buds The effect of the bell falling off

Active Publication Date: 2013-12-25
XINJIANG INST OF ECOLOGY & GEOGRAPHY CHINESE ACAD OF SCI
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  • Claims
  • Application Information

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Problems solved by technology

However, there are also problems such as cotton premature aging and hollowing in Xinjiang cotton area.

Method used

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  • Method for regulating and controlling root system architecture of under-mulch-drip irrigation cotton in sand through irrigation and nitrogen application
  • Method for regulating and controlling root system architecture of under-mulch-drip irrigation cotton in sand through irrigation and nitrogen application
  • Method for regulating and controlling root system architecture of under-mulch-drip irrigation cotton in sand through irrigation and nitrogen application

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Experimental program
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Effect test

Embodiment

[0023] In 2012, a root control test of drip fertilization was carried out on the high-yield cotton field of the 149th regiment and 5th company of the 8th Agricultural Division of Shihezi, Northern Xinjiang. The soil for the test was sandy soil with medium fertility. The cotton variety used for the test was Xinluzao 26. The planting mode is ultra-wide film cotton planting, with a film width of 2.05 meters, six rows per film, and 13,600 seedlings / mu. The drip irrigation and fertilization mode under the film is adopted. The specific operation is carried out according to the following steps:

[0024] Drip seedling water after sowing, and drip 45 square meters per mu of sandy land;

[0025] Dripper water at the beginning of June; 45 square meters per mu of sandy land, and the dripping time is controlled within 6 hours, dripping water for the first 3 hours, then dripping fertilizer for 1 hour, applying 3 kg / mu of urea, and then dripping water for 2 hours;

[0026] After the first wa...

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Abstract

The invention relates to a method for regulating and controlling the root system architecture of under-mulch-drip irrigation cotton in sand through irrigation and nitrogen application. According to the method, an irrigation amount, an irrigation period and a nitrogen application amount are adjusted according to growth stages of the cotton in the whole growth period of the cotton; on the premise of irrigation of sufficient seedling emergence water, primary watering time is accurately seized, the amounts of primary water and a nitrogen fertilizer are controlled, so demands of a root system for water and nutrients during growing towards deep soil are met, loss of nutrients caused by leaching is reduced, and dripping time, a dripping amount and a fertilization amount can be determined according to a demand rule of the cotton for water and nutrients during growth. The method realizes regulation and control of the spatial architecture of the root system of the cotton by using the principles of adjusting effects of water and nitrogen on plant growth. With the method, distribution of the root of the cotton in deep soil can be promoted through management of water and nitrogen, so reduction in root length and density of the cotton in a boll opening stage is mitigated, and guarantee is provided for absorption of water and nitrogen by the cotton in a late growth stage.

Description

technical field [0001] The invention relates to a method for regulating the root system configuration of cotton under drip irrigation under sandy soil film by irrigation and nitrogen application. Background technique [0002] Cotton root system is the main organ for cotton water and nutrient absorption, and the development and spatial configuration of the root system have a significant impact on cotton yield. Xinjiang's cotton high-yield cultivation technology has been at the world's advanced level in recent years, and the cotton yield per unit area is far higher than the world's average per unit area yield, which is at the highest level in the world. However, there are also problems such as premature aging and hollowing of cotton in Xinjiang cotton area. The root sampling results showed that the shallow distribution of the cotton root system under film-covered drip irrigation and the obstacle of water and nutrient absorption in the root system caused by premature senescenc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01C21/00A01G25/00A01G1/00
CPCY02A40/22
Inventor 王平田长彦
Owner XINJIANG INST OF ECOLOGY & GEOGRAPHY CHINESE ACAD OF SCI
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