Paddy rice cold resistance agent using herba equiseti hiemalis extract as cold resistance ingredient, and application thereof

Abstract

The present invention relates to a paddy rice cold resistance agent. The paddy rice cold resistance agent is prepared from a herba equiseti hiemalis extract which is used as a cold resistance ingredient, a binder, an emulsifier, a preservative and a solvent through processes of cold resistance ingredient extraction, ingredient dissolution and mixing. The paddy rice cold resistance agent is suitable to be applied through paddy rice leaf surface spraying and reduces the damage of low temperature cold wave to the growth of the paddy rice. The cold resistance agent is mixed with water in a weight ratio of 1:300 and the mixture is sprayed to the leaf surface, which can significantly increase the contents of free proline, soluble sugar and other stress resistant substances in the paddy rice and improve the activities of CAT, POX, SOD enzymes and other stress resistant enzymes, thereby increasing the cold tolerance of the paddy rice and reduce the damage of cold to the paddy rice. . The contents of free proline and soluble sugar are increased by 60.2%-79.1% and 31.0%-46.7%, respectively, and the contents of chlorophyll is increased by 14.6%-22.3%. The cold resistance agent has an obvious cold resistance effect with a persistence lasting for 8-11d. The paddy rice cold resistance agent is simple and convenient in production, low in cost, easy to use, environmentally friendly, and obvious in economic, social and ecological benefits.

Description

technical field [0001] The invention relates to a rice anti-cold agent for alleviating the harm of low-temperature cold wave to the growth of rice, and belongs to the technical field of crop cultivation. Specifically, it is a rice anti-cold agent, which uses horsetail extract as a cold-resistant component, and is prepared by mixing with adhesives, emulsifiers, preservatives and solvents after extracting cold-resistant components and dissolving components; it is suitable for rice Foliar spraying can reduce the harm of low temperature and cold wave to rice growth. Background technique [0002] Chilling injury is a serious natural disaster for crops, which can affect the growth and metabolism of crops, cause the physiological activities of crops to be hindered, cause crops to be injured and reduce production, and in severe cases, crops will die. Global crop losses due to low temperature and cold are as high as hundreds of billions of dollars every year. [0003] Rice is the l...

AI Technical Summary

Problems solved by technology

Rice cold damage occurs in early spring and late autumn. During the sowing and seedling raising period of early, middle rice and northern rice in southern my country, low temperature (cold in late spring) is often encountered, resulting in a large number of rotten seedlings and dead seedlings; Affect rice photosynthesis and material transportation, resulting in empty grains and reduced yield; this has brought huge losses to rice production

[0004] At present, rice production in my country mainly adopts plastic film mulching, or uses cold-resistant preparations made of abscisic acid and salicylic acid as cold-resistant ingredients to prevent and control cold damage. Although these methods have certain cold-proof effects, the former is complicated to operate and costs It is relatively high, and it is difficult to predict when the cold weather will occur, and effective measures cannot be taken in time; the latter uses expensive chemical components such as abscisic acid and salicylic acid, and the product price is expensive and the cost of use is high, so it is difficult to promote it on a large scale