Cultivation method of rice seedlings on severe saline-alkali soil

Abstract

The invention relates to the technical field of rice seedlings on severe saline-alkali soil, in particular to a cultivation method of the rice seedlings on the severe saline-alkali soil. The cultivation method comprises the following step of S1, seed disinfection, specifically, putting a saline-alkali tolerant rice variety into a mixed solution containing Emiaojing(a pesticide for treating abakanae disease) at normal temperature and room temperature for soaking. According to the cultivation method, the seeds are subjected to seed disinfection before seedling raising, so that the method can effectively reduce rice damping-off, rice seedling rot, the bakanae disease and the like which are easily generated in rice seedling raising in saline-alkali areas; meanwhile, alkalinity culture is carried out on the rice seeds in a nursery garden, so that the rice seeds can be suitable for the environment on the severe saline-alkali soil before transplanting; and after transplanting, it can be ensured that the rice seedlings are suitable for the production environment as soon as possible, mutual repulsion is avoided, the problem of seedling death caused by difficult control over the seedlings or the seed growth environment due to direct seeding of the seedlings or the seeds in the treated severe saline-alkali soil is solved, the survival rate of the seedlings or the seeds is improved, and the yield of rice is improved.

Description

technical field [0001] The invention relates to the technical field of rice seedlings on severely saline-alkali ground, in particular to a method for cultivating rice seedlings on severely saline-alkali ground. Background technique [0002] There are many saline-alkali lands in China, among which the cultivated land area of ​​saline-alkali land in Heilongjiang Province is close to 7 million mu, with high pH value (8~9), strong alkalinity, many types of soda, poor permeability, heavy soil viscosity, cold slurry, and nutrients Slow release, low organic matter content, low soil fertility and other characteristics, because of these characteristics of its body, it is not suitable for rice planting, but in order to change this situation, China has invested a lot since the 1980s. Funding, carrying out experiments and research, through years of hard work, there have been obvious results, and the rice yield has reached 400-500kg per mu, but at present, the seedlings or seeds are dire...

AI Technical Summary

Problems solved by technology

[0002] There are many saline-alkali lands in China, among which the cultivated land area of ​​saline-alkali land in Heilongjiang Province is close to 7 million mu, with high pH value (8~9), strong alkalinity, many types of soda, poor permeability, heavy soil viscosity, cold slurry, and nutrients Slow release, low organic matter content, low soil fertility and other characteristics, because of these characteristics of its body, it is not suitable for rice planting, but in order to change this situation, China has invested a lot since the 1980s. Funding, carrying out experiments and research, through years of hard work, there have been obvious results, and the rice yield has reached 400-500kg per mu, but at present, the seedlings or seeds are directly sown in the severely saline-alkaline land that has been treated, and through the corresponding acid-base Neutralize and fertilize, change the pH of the planting land, and achieve the growth environment of seedlings or seeds, but directly sow the seedlings or seeds in the severely saline-alkali land that has been treated, so it is difficult to control the growth environment of seedlings or seeds, and at the same time, there is no seed disinfection As a result, rice seedling growers in saline-alkaline areas are prone to rice blight, rice rotten seedlings, bakanae disease, etc., resulting in low survival rate of seedlings or seeds. Therefore, the yield of rice planted by this method is very low