Method for preparing rice nursling seedlings and dryly planting mature seedlings

Abstract

The invention discloses a method for preparing rice nursling seedlings and dryly planting mature seedlings. The method for preparing the rice nursling seedlings comprises a seed soaking process and a seed producing process, wherein the seed soaking process comprises a preparation stage and a seed stage; the seed producing process comprises a seed stage, a nursling bud stage, a nursling seedling stage and seed producing termination; and the method for dryly planting the mature seedlings comprises a soil preparation stage before seeding, a dry seeding stage, a seedling producing stage, a continuous irrigation stage, a wetting management stage and a personalized irrigation stage. The seedling producing stage totally or partially substitutes the bud producing stage in conventional nursling seedling preparation, and bud production before seeding is changed into bud production after seeding, so that the preparation technology of the nursling seedlings is simplified, the seedling recovery period is shortened, and the heading period is ahead of time; by continuous irrigation, the growth of rice buds is promoted, the seedlings emerge regularly, and the germination rate is high; the total salt content of a soil plough layer is effectively reduced, and dry planting in saline-alkali soil becomes true; and a shallow water layer of below 3 centimeters is established before the first complete leaf is expanded to allow the rice seedlings to grow from the position below water to the position above the water, so that seedling death due to salt accumulation in the soil under a wetting management or dry management condition is effectively prevented, and the live seedling rate is improved.

Description

technical field [0001] The invention relates to a method for raising and cultivating rice seedlings, in particular to a method for preparing rice milk seedlings and dry seedlings. Background technique [0002] The direct (throwing) sowing technology of rice milk seedlings is a light rice cultivation technology. This kind of technology is currently mainly researched and applied in some provinces and cities such as Shanghai, Liaoning, Jiangsu, Jiangxi, and Hebei. [0003] The main points of the rice milk bud throwing planting technology promoted by the Agricultural Technology Service Center of Jiading District, Shanghai: Soak the seeds with medicine for 2 days, and then germinate them for about 2 days. It usually takes 8-9 days to raise the milk seedlings. The main cultivation technique of the Agricultural Technology Promotion Center of Dandong City, Liaoning Province: Put the rice seeds into water to soak the seeds, when the rice seeds are naturally broken and exposed in wa...

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to address the shortcomings of the existing milk seedling preparation technology that requires budding before sowing, the time required is long, and the size range of the prepared milk seedlings is small, and the existing milk seedling direct (throwing) sowing technology requires mechanical water soil preparation Insufficient waste of water resources caused by land preparation and water

And aiming at the delay of the growth period, low emergence rate, low live seedling rate, large amount of seeds, heavy weed damage, unstable yield level and easy production reduction of the existing dry direct seeding technology with seeds as seeding materials, the first is Provide a method for preparing rice milk seedlings; the second is to provide a method for dry-planting rice milk seedlings