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Phosphorus fertilizer application method for improving salt and alkali resistance of cotton in seedling stage

A technology of cotton and phosphate fertilizer, which is applied in the field of crop production technology and fertilizer use, can solve the problems of weak salt-alkali resistance, achieve the effects of simple operation, reduce seedling death, and improve seedling salt-alkali resistance

Inactive Publication Date: 2011-11-23
CHINA AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to provide a method of applying phosphorus to improve the saline-alkali resistance of cotton seedlings, so as to solve the problem of weak saline-alkali resistance of cotton seedlings on saline-alkali ground

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Embodiment 1, diammonium phosphate is applied to cotton rhizosphere as seed fertilizer on sulfate-chloride saline soil

[0022] In the newly reclaimed land of the cotton breeding base of Xinjiang Academy of Agricultural Sciences in Korla City, Xinjiang, the total salt content of 0-30cm is 1.5%, which is moderate to severe sulfate-chloride saline soil.

[0023] The experimental crop was upland cotton.

[0024] Phosphate fertilizer is diammonium phosphate (P 2 o 5 content is 46%), and its total application rate is 450 kg / ha (equivalent to P 2 o 5 207 kg / ha).

[0025] Divide all the DAP into two parts, the base fertilizer and the seed fertilizer, and apply them to the soil respectively. The application mode of basal manure is that 80% (that is, 360 kilograms of diammonium phosphate per hectare) of the total amount of DAP in the autumn of the previous year is evenly sprinkled on the ground, and then deeply plowed to the soil layer of 20cm; the application of seed ferti...

Embodiment 2

[0027] Embodiment 2, calcium superphosphate on sulfate-chloride saline soil is applied to cotton rhizosphere as seed fertilizer

[0028] In the newly reclaimed wasteland of the cotton breeding base of Xinjiang Academy of Agricultural Sciences in Korla City, Xinjiang, the total salt content of 0-30cm is 1.5%, which is moderate-severe sulfate-chloride saline soil.

[0029] The experimental crop was upland cotton.

[0030] The phosphate fertilizer variety is double superphosphate (P 2 o 5 Content is 46%), and its total application rate is 450 kg / ha.

[0031] Divide all the heavy superphosphate into two parts, the base fertilizer and the seed fertilizer, and apply them to the soil respectively. The application mode of basal manure is that 80% (i.e. 360 kg / ha) of the total superphosphate total application rate is evenly sprinkled on the ground in the autumn of the previous year, and then deeply plowed to the 30cm soil layer; The way of application is to apply 20% of the total a...

Embodiment 3

[0034] Example 3, on the chloride-sulphate saline soil, double superphosphate is used as base fertilizer, potassium dihydrogen phosphate is used as seed fertilizer and applied to cotton rhizosphere by drip irrigation

[0035] In the newly reclaimed wasteland of the cotton breeding base of Xinjiang Academy of Agricultural Sciences in Korla City, Xinjiang, the total salt content of 0-30cm is 1.5%, which is moderate-severe sulfate-chloride saline soil.

[0036] The experimental crop was upland cotton.

[0037] The phosphate fertilizer variety is double superphosphate (P 2 o 5 Content is 46%) and potassium dihydrogen phosphate (P 2 o 5 Content is 51%), the total application rate of two kinds of phosphorus fertilizers is 207 kg / ha.

[0038] First, 80% of the total phosphorus application rate (i.e. P 2 o 5 165.6 kg / ha) as triple superphosphate (P 2 o 5 content is 46%) as base manure in the autumn of the first year and put into the soil. The usage method is to spread 360 kg / ha ...

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Abstract

The invention discloses a phosphorus fertilizer application method for cotton in the seedling stage. The method comprises the following steps: dividing the total phosphorus fertilizer to be applied into base fertilizer and seed fertilizer; spreading the base fertilizer in the soil in which the cotton is to be planted and tilling the soil deeply; and applying the seed fertilizer in the soil in which the cotton is planted. The phosphorus fertilizer application method provided by the invention has the following beneficial effects: the phosphorus fertilizer application method is renovation of the traditional fertilizer application methods in which the phosphorus fertilizer is applied as the base fertilizer; as the seed fertilizer, the phosphorus fertilizer can effectively improve the salt and alkali resistance of the crops in the seedling stage, reduce the seedling death rate, improve the survival rate of seedlings, promote premature and rapid growth of the cotton and increase the yield, solves a critical bottleneck problem in cotton production in the saline-alkali soil and has important practical application value; and the method provided by the invention is simple and convenient to operate, is practical and can be widely used for cotton production in the saline-alkali soil.

Description

technical field [0001] The invention relates to a phosphorus application method for improving the saline-alkali resistance ability of cotton seedlings, and belongs to the fields of crop production technology and fertilizer application technology. Background technique [0002] There are a large amount of salinized and alkalized soil in the inland areas and coastal beaches of northern my country, which seriously harms agricultural production. The seedling stage is the period when crops are most sensitive to saline-alkali hazards. The direct consequence is high seedling mortality resulting in lack of seedlings and broken ridges, or growth and development are inhibited, and the plant size and growth period are inconsistent, which seriously affects field management, group growth, yield and economy. benefit. [0003] In order to improve the salt-alkali resistance of crops, predecessors have carried out a lot of research and development in applied technologies, which can be summar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01C21/00
Inventor 冯固白灯莎·买买提艾力孙良斌张少民
Owner CHINA AGRI UNIV
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