Growth-promoting stress-resistant rice seedling raising basic substrate, seedling raising substrate, preparation method of seedling raising substrate and seedling raising method

Abstract

The invention provides a growth-promoting stress-resistant rice seedling raising base substrate, a seedling raising substrate, a preparation method of the seedling raising substrate and a seedling raising method, and relates to the technical field of rice seedling raising. Based on abundant and easily available crop straw resources in main rice and wheat grain producing areas, raw materials of the basic substrate comprise decomposed rice and wheat straws, decomposed rice husks, periodical water-logging type rice soil and vermiculite, and agricultural organic wastes are redeveloped to replace traditional nutrient soil for seedling raising. The invention further provides the seedling raising substrate based on the basic substrate, more comprehensive and balanced nutrients are provided for seedling raising by utilizing reasonable combined application of organic and inorganic fertilizers, and urea and diammonium phosphate which are easily absorbed and utilized by rice are adopted as nitrogen fertilizers to synergistically supply seedling nutrients. According to the seedling raising substrate, humic acid and naphthylacetic acid plant growth regulators with proper concentrations are added, so that robust development of seedling plants and root systems is promoted, the stress resistance of the rice is improved, and the cultivation of strong rice seedlings is facilitated.

Description

technical field [0001] The invention belongs to the technical field of rice seedling raising, and in particular relates to a growth-promoting and stress-resistant rice seedling raising basic matrix, a seedling raising matrix, a preparation method thereof, and a seedling raising method. Background technique [0002] Rice is the main food crop planted and consumed in my country. The planting area of ​​rice accounts for about 30% of the total grain sown area, and the total output accounts for about 40% of the grain output. More than 65% of the country's population takes rice as a staple food. At present, the main methods of rice planting in my country include live broadcasting, throwing seedlings, manual transplanting, machine transplanting, etc. Live broadcasting and throwing seedlings are greatly affected by weather factors and pests and diseases, and it is difficult to ensure stable production; manual transplanting is labor-intensive, labor-intensive and time-consuming; It is...

AI Technical Summary

Problems solved by technology

At present, the main methods of rice planting in my country include live broadcasting, throwing seedlings, manual transplanting, machine transplanting, etc. Live broadcasting and throwing seedlings are greatly affected by weather factors and pests and diseases, and it is difficult to ensure stable production; manual transplanting is labor-intensive, labor-intensive and time-consuming; It is suitable for the promotion of large-scale planting technology. Therefore, mechanized planting technology is a cost-effective and high-efficiency technology that replaces manual transplanting of seedlings of the right age. Its demonstration and promotion are of great significance for accelerating large-scale agricultural production.

At present, machine-transplanted rice is mainly transplanted with small and medium-sized seedlings cultivated under dense ecological conditions. The seedling age is mostly 15-20 days, and the leaf age is 2.5-4.0. Injury to the root and slow growth of the tree will affect the greening and efficient tillering after machine-transplanted, resulting in a low effective panicle number, delayed full-heading stage, prolonged growth period, and reduced final yield

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