Hybrid rice pre-harvest sprouting inhibitor

Abstract

The invention discloses a hybrid rice pre-harvest sprouting inhibitor, which belongs to the technical field of agricultural production. In the process of hybrid rice seed production and cultivation, the pre-harvest sprouting phenomenon can easily occur due to high temperature and high humidity. The pre-harvest sprouting not only has a strong impact on yield, but also reduces the quality of rice and brings difficulty to harvesting as well. The inhibitor comprises the following main active components weighted in gram (in 1 litre of aqueous solution): 2.200 to 5.900 grams of phytic acid, 0.120 to 0.850 grams of abscisic acid, 6.520 to 9.400 grams of calcium chloride, 7.500 to 10.200 grams of boric acid, 0.100 to 0.800 grams of paclobutrazol and 0.001 to 0.010 grams of salicylic acid. The inhibitor has a good effect in inhibiting the pre-harvest sprouting of hybrid rice, the pre-harvest sprouting-inhibiting percentage can be up to 75 percent, the thousand kernel weight can be increased by 0.32 to 0.55 grams, and the seed vigor cannot be affected. The inhibitor has the advantages of convenient use, tiny dosage, low cost, no toxicity and no harm, and has a broad popularization and application prospect.

Description

technical field [0001] The invention belongs to the technical field of agricultural production and relates to an inhibitor of hybrid rice panicle germination. The invention is used in hybrid rice seed production fields and hybrid rice cultivation fields, and has main functions of inhibiting panicle germination and increasing grain weight. Background technique [0002] After the grains of hybrid rice mature, the panicle germination is more serious because the dormancy period is generally short or not obvious. In southern my country, especially in the middle and lower reaches of the Yangtze River, about one-third of the years are cloudy and rainy during the rice maturity stage, and the problem of ear germination is particularly prominent. In the production of hybrid rice seeds over the years, due to the widespread use of the "September 20" and the high temperature and high humidity in the harvest season, panicle germination is a prominent problem. Whether it is spring seed pr...

AI Technical Summary

Problems solved by technology

According to investigations, panicle germination reduces the yield of hybrid rice seed production by 10-20%, and more than half in severe cases, and the average annual hybrid rice seed viability decreases by more than 10% due to internal early germination physiological changes, resulting in germination. The seedling rate and the seedling rate are reduced. At the slightest, the production will be reduced due to insufficient seedlings, and the production will be reduced. In severe cases, the planting area of ​​hybrid rice will be affected and the food production plan will not be completed.

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