A composition for preventing low temperature of rice and a preparation method and application thereof
By spraying rice with a composition containing 3-chloro-4-hydroxyphenylacetic acid, dipotassium hydrogen phosphate, and methyl jasmonate, the problem of yield and quality loss in rice at low temperatures was solved, resulting in increased yield and seed setting rate. This method is suitable for rice protection against cold dew winds.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- LIUYANG BRANCH OF CHANGSHA COMPANY OF HUNAN TOBACCO
- Filing Date
- 2026-04-22
- Publication Date
- 2026-07-17
AI Technical Summary
Low temperatures during the heading, flowering, and grain-filling stages of rice can hinder pollen development, impair pollination and fertilization, and slow down grain filling, thus affecting yield and quality. This is especially true in double-cropping rice areas where cold dew winds are frequent and exacerbate the problem.
A composition comprising 3-chloro-4-hydroxyphenylacetic acid, dipotassium hydrogen phosphate, and methyl jasmonate, in DMSO solvent, is sprayed onto rice to promote plant growth regulation, activate the antioxidant system, protect cells from oxidative damage, and enhance stress resistance.
It effectively prevents rice from freezing and losing water at low temperatures, prevents damage from cold dew winds, increases yield and grain filling rate, and is environmentally friendly. It is suitable for different rice varieties.
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