Release agent for flue-cured tobacco quinclorac phytotoxicity

Abstract

The invention relates to a release agent for flue-cured tobacco quinclorac phytotoxicity. The release agent comprises the following components in percentage by weight: 1.5%-37.5% of diethyl aminoethyl hexanoate and 62.5%-98.5% of L-cysteine. According to the release agent for flue-cured tobacco quinclorac phytotoxicity disclosed by the invention, the combined action of the function of diethyl aminoethyl hexanoate for adjusting plant endogenous hormone balance and the detoxifying effect of the L-cysteine are comprehensively utilized for effectively relieving quinclorac phytotoxicity symptoms, so that quinclorac teratogenetic tobaccos can remarkably recover normal botanical characters and inherent chemical quality; moreover, the material price is low, the compatibility is strong, the preparation is simple, the effect is obvious, the safety is high, the pertinence is strong and the practical value is high.

Description

technical field [0001] The invention relates to the technical field of eliminating phytotoxicity of flue-cured tobacco, in particular to a quinclorac phytotoxicity-relieving agent for flue-cured tobacco. Background technique [0002] The chemical name of quinclorac (quinclorac) is 3,7-dichloro-8-quinoline carboxylic acid, which is a hormone-type highly selective herbicide. It is used for the control of gramineous and broad-leaved weeds such as barnyardgrass in crop fields. [0003] Due to the long residual period of quinclorac herbicide, the time interval for crops after planting is strict: for example, no crops other than rice can be planted within 300 days after its application, and flue-cured tobacco and other crops cannot be planted within 24 months. Although the use of quinclorac is prohibited in tobacco, the use of quinclorac on the cropland of the crops before flue-cured tobacco will still cause quinclorac phytotoxicity in the tobacco field. The main symptoms are: th...

AI Technical Summary

Problems solved by technology

Although the use of quinclorac is prohibited in tobacco, the use of quinclorac on the cropland of the crops before flue-cured tobacco will still cause quinclorac phytotoxicity in the tobacco field. The main symptoms are: the leaves of the tobacco plant become narrow Thick, the leaf edge curls inwardly towards the back of the leaf, the tip of the leaf becomes hooked, the leaf color is dark green, and the tobacco leaf is severely distorted; the total sugar content of the tobacco leaf decreases, the nicotine content increases, and the yield and quality of the tobacco leaf seriously declines after roasting

With the widespread application of quinclorac herbicides in the previous crops of flue-cured tobacco, the occurrence area and degree of damage of flue-cured tobacco quinclorac are increasing and aggravating, which has a serious impact on the yield and quality of tobacco leaves

[0004] Currently, the quinclorac phytotoxicity relievers used in flue-cured tobacco include: (1) gibberellin, brassin, indole acetic acid, and brassinolide, but the above-mentioned substances have a narrow range of concentration and are difficult to control, resulting in two The injury of quinclorac is aggravated or new injury is produced; (2) Authorized invention patent: quinclorac-induced flue-cured tobacco deformity release agent and its application method (authorization number ZL 2010 1 0111933.X), the component is Bihu 0.4 %-0.6%+Yiwei 3.6%-9.0%+potassium nitrate 13.3%-31.6%+brewed vinegar 61.3%-81.9%. Disadvantage of higher price (25.5-35.2 yuan / 100 g)

However, there is no report on using diethyl hexanoate and L-cysteine ​​as the quinclorac phytotoxicity removing agent for flue-cured tobacco

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