Method for promoting fast germination and enhancing salt tolerance of rice seeds in seashore saline land

Abstract

The invention discloses a method for promoting fast germination and enhancing salt tolerance of rice seeds in seashore saline land. The method includes the steps that firstly, an aqueous hydrogen peroxide solution with the mass fraction being 10%-15% is used for soaking the rice seeds for 20-30 minutes; then the rice seeds are soaked by water for 8-10 hours, and then a NaCl aqueous solution of 2-5 mmol / L is used for soaking the rice seeds subjected to water immersion for 15-30 minutes; afterwards, the rice seeds are soaked for 1-2 hours by an aqueous solution including proline of 20-45 mmol / L and sulfosalicylic acid of 0.5-2 mmol / L, and then the rice seeds are soaked for 1-2 hours by an aqueous gibberellin solution of 70-200 mg / L; then the soaked rice seeds are germinated, and the germinated rice seeds are sown in a seashore saline land field. By the adoption of the method, the rice seeds are subjected to long-termed salt stress treatment, and then the mixed solution prepared from the proline and the sulfosalicylic acid and gibberellin are used for soaking the seeds, so that the germination capacity and salt tolerance of the rice seeds are improved quickly, and the bottleneck problem that the emergence rate of direct seeding rice seeds in the seashore saline land is low is solved. The method has great practical application value.

Description

Technical field: [0001] The invention belongs to the field of rice planting, and in particular relates to a method for promoting rapid germination and salt resistance of rice seeds in coastal saline-alkali land. Background technique: [0002] my country currently has a large food gap, which requires a large amount of imports, and insufficient arable land resources, which restricts the sustainable development of my country's food. However, saline-alkali soil in my country has a large area and is an important reserve cultivated land resource. The development and utilization of saline-alkali soil resources has become an important way to ensure food security in my country. [0003] Coastal saline-alkali land resources are important reserve soil resources in my country. As the Bohai Sea granary rises to a national strategy, using saline-alkali land to increase grain production is an important way. In the process of utilization of coastal saline-alkali land resources in northern ...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the bottleneck problems of low seedling emergence rate, weak seedling salt resistance ability and poor population construction leading to low rice yield in the process of direct seeding cultivation of rice seeds in coastal saline-alkali land, and to provide a method for promoting rapid germination and resistance of rice seeds in coastal saline-alkali land. The method of salt capacity, using this method can increase the germination rate of rice on the coastal saline-alkali land, and the embryo and radicle will grow early and quickly