A kind of rice regeneration ability identification method

Abstract

The invention discloses a rice regeneration ability identification method, comprising: (1) collecting effective panicle numbers in the first rice season and the regeneration season; (2) calculating the effective panicle number ratio, the effective panicle number ratio = the effective panicle number in the regeneration season / the first season Effective spike number × 100%; (3) Estimate rice yield and identify regeneration ability according to the regeneration force estimation model Y=951.95+24.68X; where: X represents the effective spike number ratio, and Y represents the yield. Beneficial effect of the present invention: according to the effective ear number ratio, not only considering the requirement that the effective ear number in the first season is suitable for the medium, but also taking into account the characteristics that the effective ear number in the regrowth season is sufficient, so as to meet the requirements of early and accurate identification of the regeneration ability of the variety; the effective ear number The ratio eliminates the influence of the difference in characteristics between varieties, has common characteristics, and is suitable as a measurement index; it eliminates the process of relying on instrument detection or manual testing of a large number of species; the correlation coefficient between the regenerative power estimation model and the regeneration season yield is 0.65 ** , and the average accuracy of forecasting output reaches 90.04%.

Description

Technical field [0001] The present invention relates to the field of regenerative force identification, and more particularly to a method of regenerating a rice regeneration force. Background technique [0002] Recycled rice is after the harvest of rice, it is sprouting with sleeping axillary buds, and then earning the rice to harvest rice. Recycled rice has a short birth period, high rice, high daily production, saving, adjustment labor, saving material costs and high economic efficiency, in a quarter of the light temperature, there is more than a quarter-season rice area, or double season rice area only A single season area is widely used. In recent years, Sichuan, Hunan, Chongqing, Hubei, Yunnan, Jiangxi, Fujian, Guangxi, Anhui, Guizhou, Zhejiang, etc. have formed a certain regenerative rice planting scale. [0003] At present, most of the renewable rice varieties of Daejeon applications are screened from the variety of production and promotion, and there are fewer renewable r...

AI Technical Summary

Problems solved by technology

The regenerative ability of rice is affected by many factors such as genetics, environment, cultivation measures, etc. Raising rice varieties not only require high yield of the first season rice, but also meet the requirements of high yield in the regenerative season, which increases the difficulty of breeding rice varieties with strong regenerative ability , the breeding methods of rice varieties with strong regenerative ability are still being perfected, and there is a lack of simple and effective identification methods for regenerative ability

[0004] At present, the identification methods / indices of regenerative ability include stem thickness of the first crop rice, dry weight of the stem and sheath, total combining ability (Tca), root activity from the maturity stage of the first crop to the full heading stage of the regeneration season, and the fifth day after harvest of the first crop rice. The sheathing rate of regenerated buds of the first season rice pile, the SPAD value decay index of the first season rice from full panicle to mature leaves, the ratio of negative nodes, etc. The shortcomings of these indicators or methods are that they are not intuitive enough, need to be measured by special instruments, and the workload is relatively large , the accuracy rate is low, and some of them use a certain trait of the variety directly as an identification index, which is affected by the difference in characteristics between varieties to a certain extent, and lacks common characteristics.

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