Rice seedling raising water retaining agent, rice seedling raising hemp film with water retaining function and manufacturing method

Abstract

The invention provides a rice seedling raising water retaining agent, a rice seedling raising hemp film with a water retaining function and a manufacturing method. The rice seedling raising water retaining agent is prepared from, by weight, 50% to 98% of polyglutamic acid, 1% to 49% of polyaspartic acid and 1% of polyacrylamide. The water retaining agent is added to a hemp film made from flax or ramie according to the standard of 5-10 g per square meter. Drying is carried out, the dry hemp film carrying the water retaining agent is obtained, then the hemp film is cut into the size of a seedling disc, and the rice seedling raising hemp film is made. The rice seedling raising hemp film with the water retaining function is made according to the manufacturing method. The effect of reducing rice seedling disc water losses is achieved, the water retaining performance of the seedling disc can be improved by 10% to 200%, the seedling disc is extremely good in root performance, the root systemis developed, disc scattering is avoided, mechanical rice seedling transplanting omission is avoided, the seedling survival rate can reach 95% or above, soil-borne diseases are reduced, seedlings aregood and strong, and the seedling age is consistent.

Description

technical field [0001] The invention relates to the field of agricultural breeding, in particular to a water-retaining agent for rice seedling raising, a rice seedling raising film with water-retaining function and a production method. Background technique [0002] At present, plastic seedling trays are mostly used in rice production. Because it is difficult to obtain seedling soil, the source of seedling soil is mostly raw soil, the soil structure is poor, and the water retention is poor. During the entire seedling cultivation period, watering times are frequent and the humidity in the shed is high, creating good breeding conditions for various pathogenic bacteria. As a result, various soil-borne diseases at the seedling stage frequently occur; the root system of rice seedlings is poorly developed, the packing is poor, and the discs are easy to scatter during mechanical transplanting, resulting in a high rate of missed insertions. There are three types of seedlings in the ...

AI Technical Summary

Problems solved by technology

[0003] Based on the above deficiencies, the present invention provides a water-retaining agent for rice seedling raising and a rice seedling raising film with water-retaining function and a production method, which solves the problem that the current rice seedling raising is mainly raw soil and miscellaneous soil, the soil structure of seedling raising is poor, and there is no water-retaining ability. The problem of fertilizer retention ability; solves the problem of unsatisfactory seedling packing effect in rice production, easy to disperse when transplanting seedlings, and high rate of seedling shortage after transplanting