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Application of chitosan oligosaccharide and composition thereof in resisting salinity for crops

A composition and a technology of chitosan oligosaccharide, applied in the agricultural field, can solve problems such as threats to agricultural production safety, aggravation of soil salinization, secondary salinization of cultivated land, etc., and achieve the effects of protecting normal growth and development and improving effects

Active Publication Date: 2012-08-01
HAINAN ZHENGYE ZHONGNONG HIGH TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Affected by climate and human factors, secondary salinization has occurred in a large number of cultivated lands, and soil salinization has continued to intensify, restricting the sustainable development of agriculture and posing a great threat to agricultural production safety

Method used

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  • Application of chitosan oligosaccharide and composition thereof in resisting salinity for crops
  • Application of chitosan oligosaccharide and composition thereof in resisting salinity for crops
  • Application of chitosan oligosaccharide and composition thereof in resisting salinity for crops

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Example 1 Experiment of crop resistance to salt stress

[0029] In the same area, multiple plots were used to test the effect of the composition containing chitooligosaccharides on the resistance of corn, rice, wheat, sorghum, and soybean to salt disaster. The area of ​​each plot is 50 square meters. The composition containing oligochitosan is an oligochitosan aqueous solution, and the application method is spray method. The control group is spraying with clear water. The amount of liquid sprayed with clear water and the oligochitosan aqueous solution are sprayed. The dosage is the same. The salt treatment (including sodium chloride, sodium sulfate, etc.) concentration of the crop field is pretreated in advance to adjust the weight content of total salt in the total weight of the soil, and the unit of the total salt concentration is g / Kg. The conditions of water treatment and chitosan solution treatment are the same, the only difference is whether chitosan is applied or n...

Embodiment 2

[0046] Example 2 Crop resistance to acid-base stress test

[0047] In the same area, multiple plots were used to test the effect of the composition containing chitooligosaccharides on the acid-base stress of crops. The area of ​​each plot is 50 square meters. The composition containing oligochitosan is an oligochitosan aqueous solution, and the application method is spray method. The control group is spraying with clear water. The amount of liquid sprayed with clear water and the oligochitosan aqueous solution are sprayed. The dosage is the same. The pH of the crop growth environment is marked by measuring the pH of the soil.

[0048] The proportion of wilting plants refers to the percentage of plants with all drooping leaves of the crop to the total number of plants.

[0049] The concentration adjustment and application method of chitooligosaccharides were the same as in Example 1.

[0050] The specific experimental conditions and results of the spraying concentration, frequency an...

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Abstract

The invention relates to an application of chitosan oligosaccharide and a composition thereof in resisting salinity for crops, and particularly provides a farm chemical composition for crops to resist saline-alkali-acid stress. The farm chemical composition contains the chitosan oligosaccharide, and the weight percentage of the chitosan oligosaccharide in the farm chemical composition is 0.011 to 0.024 percent or 0.005 to 0.019 percent. The farm chemical composition can alleviate the diseases of the crops caused by saline, alkali and acid. The chitosan oligosaccharide with a particular concentration has a positive adjusting action on the growth of the crops under the saline-alkali-acid condition so as to protect the normal growing development of the crops.

Description

Technical field [0001] The present invention relates to the field of agriculture, and more specifically to the application of oligochitosan in the resistance to salt stress of crops such as food crops, vegetables and fruit trees. Background technique [0002] Soil salinization is a worldwide problem. The salinized soil in my country is mainly distributed in the northwest, north China, inland and coastal areas of northeast China. Affected by climate and human factors, a large number of arable land has been subjected to secondary salinization, and soil salinization continues to increase, which restricts the sustainable development of agriculture and poses a great threat to agricultural safety. Therefore, it is an inevitable trend for the current agricultural production of saline-alkali land to fully develop and utilize saline-alkali land resources and plant salt-tolerant crops with higher economic value. Cotton, as the main economic crop in saline soil areas, has strong salt tole...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N43/16A01P21/00A01G7/06
Inventor 张善学陆红霞董智荣陈丁丁王会民侯华民
Owner HAINAN ZHENGYE ZHONGNONG HIGH TECH
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