Seed treatment method for improving germination rate of dry direct-seeding rice under water-logged stress

Abstract

The invention discloses a seed treatment method for improving germination rate of dry direct-seeding rice under water-logged stress. The seed treatment method comprises the following steps: A. preparation of an initiator: preparing the initiator from water, calcium chloride, hydrogen peroxide, sodium selenite and salicylic acid; B. initiator soaking treatment of seeds: soaking rice seeds into the initiator, and renewing the initiator at 10th-14th hour; C. dehydration of rice seeds: taking out the rice seeds soaked in the initiator, drying through an air drying oven, and storing the dried rice seeds into the drying oven; D. sowing and germination: performing sowing and germination in a plastic cup with 15-17cm depth and volume of 680ml, and injecting water into the cup to simulate the water-logged stress; and E. sampling and determination: starting counting the germination number everyday from the first day after sowing, and sampling and determining the final germination rate and seedling quality at 8th day. The method is feasible, simple and convenient to operate, the problems of seed rotting and seedling rotting caused due to water-logged stress after sowing of the dry direct-seeding rice seeds can be solved, and the germination rate and even seeding emerging of the dry direct-seeding rice can be improved.

Description

technical field [0001] The invention belongs to the technical field of crop cultivation, and more specifically relates to a seed treatment method for improving the germination rate of dry-directed rice under waterlogging stress. This method is suitable for pre-sowing seed treatment of dry direct-seeding rice under the conditions of artificial sowing, artificial on-demand sowing, artificial drill and mechanized direct seeding. Background technique [0002] Dry direct seeding of rice is a new type of high-efficiency, labor-saving, water-saving and easy-to-mechanize cultivation technology. It is also one of the preferred technologies for stabilizing the area and increasing the yield during the transition period of the current rice production technology. As a new high-efficiency water-saving cultivation technology, dry direct seeding of rice plays an irreplaceable role in stabilizing the rice planting area, and has broad development prospects in our country. However, waterloggi...

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Problems solved by technology

[0004] Aiming at the waterlogging stress caused by continuous rain after sowing of dry-directed rice, the purpose of the present invention is to provide a seed treatment method for improving the germination rate of dry-directed rice under waterlogging stress. The method is simple, easy to operate, and solves the problem of drought. Problems of rotten seeds, low germination rate and irregular seedling emergence caused by waterlogging stress in direct-seeding rice production

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