A seed treatment method for improving seedling emergence rate of direct-seeding early rice under low temperature stress

Abstract

The invention discloses a seed processing method capable of improving the emergence rate of direct seeding early rice under low temperature stress. The processing method comprises the following steps: step A, preparing a priming agent: determining the using amount of the priming agent according to the ratio of the seed amount / rice seed weight to the volume of the priming agent; step B, selecting species: choosing the double cropping rice in central China; step C, soaking seeds: soaking seeds in the priming liquid, and carrying out priming under a dark condition; step D, drying seeds: filling the soaked seeds on a nylon net bag, washing the seeds by tap water, draining the water, placing the seeds in a drying oven, drying the seeds, and then storing the dried rice seeds in a refrigerator; step E, preparing the soil: preparing the soil through dry tillage, dry preparation, rotary tillage, and rake leveling for dry direct seeding; step F, sowing: carrying out sowing through dry direct seeding by machines. The operation is simple and convenient; the method is suitable for dry direct seeding and wet direct seeding; the germination force, germination rate, and seedling quality of direct seeding early rice seeds under a low temperature condition are prominently improved; the stress resistance of paddy rice seedling is enhanced, and solved is the problem that first-sowing full stand of direct seeding early rice is difficult.

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 emergence rate of direct seeded early rice under low temperature stress, which is suitable for dry direct seeding, wet direct seeding, artificial sowing, drill sowing or mechanized sowing of early rice in the double direct seeding system of double cropping rice and other sowing methods. Background technique [0002] Double-cropping rice and double direct-seeding is a light and simplified high-efficiency planting model. This model has high labor and resource utilization efficiency, and is more suitable for the whole process of mechanization. It is of great significance for ensuring my country's food safety production and maintaining the multiple cropping index. However, in the double-cropping rice area of ​​Central China, the low seedling emergence rate and irregular seedling emergence of direct-seeding early rice ...

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Problems solved by technology

[0004] Aiming at the problem of low seedling emergence rate and irregular seedling emergence caused by direct seeding early rice easily subjected to low temperature stress during the seed germination stage, the object of the present invention is to provide a seed treatment method for improving the germination rate of rice seeds under low temperature conditions, which is easy to operate, It is suitable for dry direct seeding, wet direct seeding and other modes, and can be applied to various sowing methods such as mechanized sowing, artificial on-demand sowing, and sowing. This method significantly improves the germination potential, germination rate and seedling quality of direct-seeding early rice seeds under low temperature conditions, and enhances Improve the stress resistance of rice seedlings, and solve the problem of difficulty in sowing all seedlings of early rice

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