Screening and cultivation method for high-quality and high-efficiency single-season japonica rice in middle and lower reaches of the Yangtze River

Abstract

The invention belongs to the technical field of new plant varieties and discloses a screening and cultivation method for high-quality and high-efficiency single-season japonica rice in the middle andlower reaches of the Yangtze River. The method comprises: collecting japonica rice varieties, carrying out sowing on May 11th, transplanting rice seedlings on June 1st, carrying out high-yield cultivation unified management to obtain a growth period, plant height, highest seedling, effective ear, grain number per ear, 1000-grain weight, a seed setting rate, ear length and a yield index parameter,and measuring a polished rice rate, a whole polished rice rate, chalkiness, a chalky grain rate, amylose content, protein content and gel consistency through a GBT 17891-1999 method. The method utilizes a gray correlation analysis method and a weight correlation analysis method to comprehensively inspect the above indicators to evaluate the quality of japonica rice. Compared with the traditional screening method, the screening and cultivation method is scientific, comprehensively evaluates the quality of japonica rice, accurately provides the use variety for accurate production and services the production.

Description

technical field [0001] The invention belongs to the technical field of new plant varieties, and in particular relates to a statistical method for screening high-quality and high-efficiency varieties of single-season japonica rice. Background technique [0002] At present, the existing technologies commonly used in the industry are as follows: Rice variety screening technology is mainly used in the selection and promotion of rice varieties suitable for planting in a certain area. At present, there are many varieties of rice in various places, and the varieties are messy. In the worst case, there are more than 100 rice varieties in one county. The complicated varieties bring difficulties to production guidance. , At the same time, the complicated varieties also increase the chance of encountering adversity in production and increase the risk of planting. Therefore, the application of rice variety screening technology can screen out the most suitable rice varieties for the are...

AI Technical Summary

Problems solved by technology

[0004] (1) Only focus on the screening of yield data, while ignoring other indicators that are closely related to yield, such as thousand-grain weight, seed setting rate, effective ears, number of grains per ear, etc.;

[0005] (2) Yield and quality are difficult to take into account. Existing technologies often only focus on yield or quality, and screen out a single high-yield or high-quality variety. The variety screened in this way has limited application in actual production.

[0006] (3) Among the many screening indicators, the importance of each indicator in the screening is different, and the existing technology cannot quantitatively distinguish the importance of each indicator, which also makes the screening results lack of scientificity

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