Method for carrying out low seeding rate precision row seeding rice seedling raising of hybrid rice to enable strong seedlings to form carpet shape

Abstract

The invention belongs to the field of methods for raising rice seedlings, and discloses a method for carrying out low seeding rate precision row seeding rice seedling raising of hybrid rice to enablestrong seedlings to form a carpet shape. The method adheres to the concepts of maintaining moderate low seeding rate of the hybrid rice, optimizing the quality of the rice seedlings and increasing theyield, and integrates the ideas of applying a precise row seeding technology to improve the seeding uniformity, applying a stacked hidden germination technology to promote germination and applying adrought cultivation control technology to control the seedlings so as to optimize the quality of the rice seedlings. The invention provides the carpet-shaped seedling raising method suitable for mechanized precise transplanting of the hybrid rice; the method comprises two stages of precision seeding and rice seedling quality control; the method concretely comprises the steps of carefully selectinghybrid rice seeds; preparing nutrient soil in an optimized way; carrying out low seeding rate precision row seeding; promoting germination by using the stacked hidden germination technology; using the drought cultivation control technology for controlling the seedlings. The method adopts the low seeding rate precision row seeding, thereby effectively improving seeding uniformity, and reducing missed transplanting rate and rice seedling injury rate during machine transplanting; by adopting the stacked hidden germination technology and the drought cultivation control technology, low seeding rate carpet formation is realized, seedling age flexibility is improved, the rice seedling quality is improved, and carpet-shaped robust rice seedlings which are high in quality, good in carpet forming property and suitable for mechanized precise transplanting are cultivated.

Description

technical field [0001] The invention belongs to the field of seedling raising methods, and in particular relates to a method for hybrid rice low sowing rate precision drill seedling raising and matting of strong seedlings. Background technique [0002] The annual planting area of ​​rice in my country is 30 million hectares. Realizing the mechanization of rice production is of great significance to improving my country's comprehensive grain production capacity and ensuring national food security. By the end of 2016, the comprehensive mechanization level of rice cultivation and harvesting in my country was 78.99%, the mechanical farming level reached 98.79%, the mechanical planting level was only 44.45%, and the mechanical harvesting level reached 87.11%. Planting mechanization is still a weak link in the development of rice production mechanization in my country. The reason is that the existing rice mechanized seedling raising and transplanting technology is developed on the ...

AI Technical Summary

Problems solved by technology

However, if the seedling rate is reduced, there will be problems such as a high rate of missing seedlings and poor matting of the seedlings.

The existing seedling raising and seeding technology at home and abroad is suitable for large-scale seedling raising of conventional rice, but cannot meet the application requirements of hybrid rice

At present, due to the failure to solve the problem of precision sowing and seedling raising of hybrid rice, the cultivation of hybrid rice is mainly based on manual planting.

Images