Hybrid rice preharvest sprouting inhibitor and preparation method thereof

Abstract

The invention provides a hybrid rice preharvest sprouting inhibitor. The hybrid rice preharvest sprouting inhibitor is prepared from the following raw materials: vitamin, a plant extract, an osmotic regulator, a growth inhibitor, a surfactant and water, wherein phytic acid is used as the vitamin, coumarin is used as the plant extract, NaCl is used as the osmotic regulator, abscisic acid is used asa growth inhibitor, and polysorbate 20 is used as a surfactant. The preparation method of the hybrid rice preharvest sprouting inhibitor comprises the following steps: weighing all raw materials in proportions, adding the raw materials into the water in sequence, uniformly stirring and mixing, and regulating pH (Potential of Hydrogen). A formula of the hybrid rice preharvest sprouting inhibitor provided by the invention is low in cost, the preparation method is simple, the hybrid rice preharvest sprouting inhibitor is non-toxic and harmless, the ecological environment cannot be destroyed after long-term use, follow-up germination quality of the hybrid rice preharvest sprouting inhibitor cannot be influenced, the use is convenient and effective, the hybrid rice preharvest sprouting inhibitor can be sprayed in vaporfic way for once during a rice grain filling stage by using a sprayer, the absorption time is short, the using amount is extremely small, all raw materials in the formula are water-soluble substances, the liquid is odorless, the property cannot be changed under longer-term preservation, and the formula is suitable for wide hybrid rice seed production and producing areasfor use.

Description

Technical field [0001] The invention belongs to the field of rice seed production, and specifically relates to a hybrid rice panicle bud inhibitor and a preparation method thereof. Background technique [0002] The germination of rice seeds is the most critical period in the individual development of seed plants, directly affecting rice planting and hybrid seed production. As a way of seed germination, the sprout of rice ear buds refers to the phenomenon that some cereal crops encounter rainy days in the middle and late stages of filling, which leads to the pre-harvest sprouting (PHS) phenomenon before harvest. Most of the hybrid rice farms in my country are in the south. After the seeds of hybrid rice mature, their dormancy period is generally short or not obvious. Before harvesting, they often encounter days of rain, high temperature and high humidity. The aftereffect of spraying 92 0 (GA3) at the jointing stage can easily lead to sprouts on the ears. The main symptoms of spro...

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Problems solved by technology

CN106172523A discloses a green rice panicle germination inhibitor and a preparation method thereof. The rice panicle germination inhibitor is composed of bayberry extract, bitter almond extract, mulberry root extract, salicylic acid extract and green plum extract. The respective characteristics of the raw materials are rationally used, and the rational combination enables them to play a comprehensive role in inhibiting panicle germination. It has been verified by experiments that the inhibitory effect on rice panicle germination is very obvious. Although the inhibitors provided by the invention are safe and can prevent panicle germination, each Extraction is more troublesome to obtain

CN106106548A discloses a compound rice panicle germination inhibitor and its preparation method and application. The rice panicle germination inhibitor is extracted from coumarins, bitter almond extract, mulberry root extract, salicylic acid extract, green plum extract, Composed of bayberry extract, paclobutrazol and abscisic acid, the inhibitor provided by the invention can prevent panicle germination, but there are still many extracts needed, and the preparation process of the extract is relatively troublesome