Method for improving salt tolerance of paddy rice at seedling stage

Abstract

The invention relates to a method for improving salt tolerance of paddy rice at a seedling stage and belongs to the field of paddy rice salt tolerance application. The method comprises the steps of soaking paddy rice seeds in a 1.8% NaCl salt solution for one day before fresh water soaking and germination accelerating of the paddy rice seeds, and then performing the conventional fresh water seed soaking and germination accelerating. The method can very significantly improve the salt tolerance of the paddy rice at the seedling stage. The method provides a very good approach to solve the problems that number of salt-tolerance paddy rice varieties in coastal mud flat is small, and the existing salt-tolerance varieties are low in yield, poor in disease resistance, especially rice blast resistance, and low in quality.

Description

[0001] 1. Technical field [0002] The invention relates to a method for improving the salt tolerance of rice seedlings, belonging to the field of rice salt tolerance applications. [0003] 2. Background technology [0004] my country's mainland has a coastline of 18,000 kilometers, distributed in 11 coastal provinces (cities and autonomous regions) including Liao, Hebei, Tianjin, Shandong, Jiangsu, Shanghai, Zhejiang, and Fujian. According to the survey, the total area of ​​tidal flats in my country is 35.18 million mu, of which 10.31 million mu is in Jiangsu, accounting for nearly 30%, ranking first in the country. There are 7.5 million mu of unreclaimed tidal flats, which are still growing at a rate of 19,000 mu per year. They are rare land reserve resources in my country, with huge development potential and important utilization value. my country's existing cultivated land resources have been fully tapped, and the productivity level of conventional cultivated land is facin...

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Problems solved by technology

[0006] In view of the fact that there are not many salt-resistant rice varieties in coastal beaches in my country, the existing salt-tolerant varieties have low yield, poor disease resistance, especially rice blast resistance, and poor quality, from the existing high-yielding, disease-resistant, high-quality rice varieties or Screening salt-tolerant varieties among strains or improving the salt-tolerant of existing varieties (lines) through technical means research can meet the urgent demand for salt-tolerant rice varieties in coastal beaches

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