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Chitosan oligosaccharide composite with drought resisting function and application of composite

A technology of chitosan oligosaccharide and composition, which is applied in the agricultural field, can solve the problems of drought resistance that have not been reported, and achieve the effects of protecting normal growth and development, being environmentally friendly, and being easy to popularize and use

Active Publication Date: 2011-08-10
HAINAN ZHENGYE ZHONGNONG HIGH TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Chitosan oligosaccharides have been reported on stress resistance, freshness preservation, growth promotion, and disease prevention, but no research has been reported on the combination of chitosan and other drought-resistant substances to induce plant drought resistance

Method used

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  • Chitosan oligosaccharide composite with drought resisting function and application of composite
  • Chitosan oligosaccharide composite with drought resisting function and application of composite
  • Chitosan oligosaccharide composite with drought resisting function and application of composite

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Experiment of Drought Resistant Agent 1 under Tobacco Drought

[0016] (1) Material

[0017] Location: Laboratory of Hainan Biopesticide Engineering Research Center

[0018] Crop: Tobacco

[0019] (2) Method

[0020] Composition of Drought Resistant Agent 1: Use mass concentration of 7.5% chitosan oligosaccharide + 92.5% water and then dilute CK with water 1000 times, clean water as control

[0021] Spray 1 time on the leaf surface of tobacco seedling stage, do not carry out watering treatment after spraying, allow it to dry all the time. Each treatment was replicated 4 times, and each replicate had 16 seedlings. The relative moisture content of the whole tobacco plant was measured at intervals of 3 days.

[0022] (3) Results

[0023] The relative water content (%) of table 1 tobacco

[0024]

[0025] It can be seen from Table 1 that this product is conducive to maintaining the water content in the crop body, and has tolerance and resistance to drought conditi...

Embodiment 2

[0027] Experiment of Drought Resistant Agent 2 under Drought Injury of Cucumber

[0028] (1) Material

[0029] Location: Old Town, Chengmai County, Hainan Province

[0030] Crop: Cucumber

[0031] (2) Method

[0032] Composition of Drought Resistant Agent 2: The mass concentration used is 5% chitosan oligosaccharide + 1% salicylic acid + 10% baking soda + 84% water

[0033] Spray once on the foliage of cucumber seedlings, do not water after spraying, and let it dry all the time. Each treatment was repeated 4 times, with 20 seedlings per repetition. The relative water content and wilting of the whole cucumber plant were measured at intervals of 3 days. Use clear water as CK.

[0034] Table 2 Cucumber drought damage

[0035]

[0036] Seen from Table 2, the cucumbers of the clear water control have wilted and died after 10 days of water cut-off, while the drought-resistant agent of the present invention has not completely wilted after 10 days of water cut-off.

Embodiment 3

[0038] Experiment of Drought Resistant Agent 3 under Drought Injury of Capsicum

[0039] (1) Material

[0040] Location: Old Town, Chengmai County, Hainan Province

[0041] Crop: Pepper

[0042] Composition of drought resistance agent 3: 5% chitosan oligosaccharide + 10% potassium nitrate + 5% calcium chloride + 80% water

[0043] (2) Method

[0044] In the case of dry weather, the pepper leaves were sprayed once, and no watering treatment was carried out after spraying. Each treatment was replicated 4 times, and each replicated 20 plants. Five days after spraying, the relative water content and wilting of the whole cucumber plant were measured.

[0045] Table 35 days after the pepper drought damage

[0046]

[0047] From Table 3, after 5 days, the growth of the peppers was measured, and most areas of the peppers in the clear water control had wilted, and the increase in plant height was very small. But those who have used the anti-drought agent of the present invent...

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Abstract

The invention discloses a chitosan oligosaccharide composite with drought resisting function, which is aqueous solution, wherein the mass concentration of the chitosan oligosaccharide is 5%-10%, other auxiliary active constituents include nitrogen, potassium, calcium, salicylic acid, sodium bicarbonate, poly(acrylic acid) sodium salt and sodium tungstate, and the content of the auxiliary active constituents is 0.5%-30% of the total mass concentration of the composite. The composite is suitable for vegetables and fruit trees. When the crops are threatened by drought, the composite is diluted by 1000 times with water to be sprayed on the leaves of the crops for 1-2 times; the chitosan oligosaccharide and the chitosan oligosaccharide composite have functions of stabilizing the cell structure of the crops, effectively regulating the opening and the closing of stomata, increasing the water absorbing capacity and the water conservation capacity of the crops and protecting the regular development of the crops. The chitosan oligosaccharide composite is simple to use and easy to generalize.

Description

technical field [0001] The invention relates to the field of agriculture, and more specifically relates to the application of chitosan oligosaccharides on vegetables, fruit trees and other crops to resist low drought. Background technique [0002] The area of ​​arid and semi-arid areas on the earth accounts for one-third of the total land area. Drought is a worldwide problem. According to statistics from relevant departments, the losses caused by drought to the world economy and society are equivalent to the sum of losses caused by other natural disasters. . In my country, the arid and semi-arid areas account for more than half of the country's land area, with about 570 million mu of cultivated land. How to develop and utilize arid and semi-arid areas to plant crops, change the low-to-medium yield status in this area as soon as possible, and increase grain production by a large margin in a short period of time is an urgent task for the development of high-yield and efficien...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N37/40A01N59/06A01N63/02A01N37/02A01P21/00A01N59/00
Inventor 张善学蓝亿亿陆红霞马旭东肖斌徐俊光
Owner HAINAN ZHENGYE ZHONGNONG HIGH TECH
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