Controlling agent for preventing flue-cured tobaccos from being forced to ripen at high temperature and application thereof

Abstract

The invention belongs to the field of tobacco cultivation, and specifically relates to a controlling agent for preventing flue-cured tobaccos from being forced to ripen at a high temperature. The controlling agent comprises the following components: polyamine, sodium nitroprusside and sodium sulfite. By means of the controlling agent, respiration and transpiration of leaves can be fully inhibited, accumulation of hazardous substances and dissipation of leaf water can be reduced, and the content of reactive oxygen species can be decreased; oxidation damage to cell interiors can be alleviated, and especially damage to chlorophyllous can be alleviated; through a mutual coordination between sulfhydrylization as well as nitrosation of active proteins and the controlling agent, a higher photosynthetic rate of the tobacco leaves can be maintained, and the intensity of photosynthesis is guaranteed. Experiments and researches indicate that tobacco leaves in the field sprayed with the controlling agent have obviously alleviated states of premature senility, whitening, ambustion and brown spots, and apparently improved physiological and quality indexes; the use effect is obvious, and the controlling agent can effectively prevent the flue-cured tobaccos from being forced to ripen, thereby improving the quality of tobacco leaves.

Description

technical field [0001] The invention relates to the field of tobacco cultivation, in particular to an agent for preventing and controlling high-temperature ripening of flue-cured tobacco and its application. Background technique [0002] Tobacco is a plant that is very sensitive to changes in environmental conditions. Ecological factors have a greater impact on the yield and quality of tobacco leaves. Among them, climate factors are the main ecological factors that create high-quality and characteristic tobacco leaves. Studies have shown that compared with foreign high-quality tobacco leaf production areas, the meteorological conditions of flue-cured tobacco in my country during the field growth period are mainly manifested in: relatively insufficient sunshine; relatively low temperature in the early stage, and relatively high temperature in the later stage. This phenomenon is particularly prominent in the central and southern smoking areas of my country. [0003] The Nanli...

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