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Method for applying fertilizers to cotton in severe saline-alkali land

A technology for heavily saline-alkali land and cotton, applied in fertilization methods, fertilization devices, agricultural gas emission reduction and other directions, can solve problems such as lack of fertilizer in cotton seedling stage, reduce soil fixation and leaching, improve fertilizer utilization, delay Effects of premature aging

Inactive Publication Date: 2012-07-11
SHANDONG COTTON RES CENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional fertilization methods rely solely on soil fertilization, which is not suitable for cotton planting in severe saline-alkaline land; conventional foliar fertilization methods only emphasize post-spraying, and cannot solve the problem of fertilizer shortage in cotton seedlings

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] In Bincheng District, Binzhou City, a cotton field with a salt content of 0.55% ± 0.01% was selected. At the end of November 2009, the cotton stalks were crushed and returned to the field for deep plowing. In mid-March, fresh water was used to press salt, and in mid-April, rotary tillage was carried out. On April 28, mechanical sowing was carried out according to the ground temperature and moisture content, and the cultivation was covered with plastic film. The density was 3500 plants / mu, and conventional management was carried out.

[0021] Half of the cotton fields (referred to as A1) were fertilized according to the traditional fertilization method (the total fertilizer application rate was 250kg / ha), and the fertilizer application rate per hectare was N 160kg, P 2 o 5 60kg,K 2 O 30kg. Among them, 60kg N and all phosphorus and potassium fertilizers were used as base fertilizer, and were applied to the soil in combination with rotary tillage in mid-April; 70kg N was...

Embodiment 2

[0025] In Dongying District, Dongying City, a cotton field with a salt content of 0.50% ± 0.01% was selected. At the end of November 2010, the cotton stalks were crushed and returned to the field for deep plowing. After fresh water and salt pressing in late March, rotary tillage was carried out in mid-April. On April 25, mechanical sowing was carried out according to the ground temperature and moisture content, and mulched with plastic film. The density was 3,000 plants / mu, and conventional management was carried out.

[0026] Half of the cotton fields (called A2) were fertilized by the traditional fertilization method, and the total fertilization amount and fertilization method were the same as in Example 1.

[0027] The other half of the cotton field (called B2) is fertilized by this method, and the total amount of fertilizer and the method of fertilization are the same as in Example 1.

[0028] Implementation result shows, this fertilization method (total fertilization rate...

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Abstract

The invention discloses a method for applying fertilizers to cotton in a severe saline-alkali land. On the basis of cotton straw return to land, the method is implemented by combination of quick-acting fertilizers and controlled-release fertilizers, combination of soil fertilizers and foliar fertilizers and combination of early-stage foliar fertilizer spray-application and late-stage foliar fertilizer spray-application. The method can guarantee effective absorption and utilization of nutrients by cotton plants during the whole growth period in the severe saline-alkali land, and can increase the fertilizer utilization rate by about 20% and the cotton yield by more than 15% while reducing the fertilizer input amount by 15-20%.

Description

technical field [0001] The invention relates to a cotton field fertilization method, in particular to a chemical fertilizer application method for cotton planting in severe saline-alkali land. Background technique [0002] Fertilization is an important way to increase agricultural production and income, and cotton planting in saline-alkali land is no exception. Reasonable fertilization has great potential to increase cotton yield in saline-alkali land. There have been some reports on the research on cotton fertilization methods in saline-alkali land. Among them, "Research on Cotton Planting Technology in Coastal Saline Soil" (Xu Huichun, etc., Shandong Cotton Research Center "Shandong Agricultural Science" 1995NO.4P20) discloses a method of fertilizing cotton in coastal saline soil, emphasizing the economical benefits of coastal saline soil. The method of fertilization is to increase the application of phosphorus fertilizer and nitrogen fertilizer; after that, "Study on the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01C21/00
CPCY02P60/21
Inventor 董合忠辛承松李维江唐薇张冬梅李振怀卢合全
Owner SHANDONG COTTON RES CENT
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