Saline and alkaline land rice greenhouse seedling culture method

Abstract

The invention discloses a saline and alkaline land rice greenhouse seedling culture method. According to the method, a table land in a saline and alkaline land is selected, a seedling culture greenhouse is arranged on the table land, rice seedlings are cultured in spring, a film of the greenhouse is opened, soil in the greenhouse is washed by rainwater, the rainwater enters the greenhouse, the salt-tolerant amount of the soil in the greenhouse is reduced, salt discharging pipelines are laid in a seedbed in the greenhouse and as same as salt discharging ditches outside the greenhouse, and accumulation of the salt of the soil in the greenhouse reduced. Substrates applicable to use of the saline and alkaline lands are selected and used for culturing seedlings, an EC value of the substrates islow, the content of a k fertilizer is reduction, sowing amount of a seeding trays is reduced, salt resistance of the seedlings is enhanced, watering amount of the seedlings is controlled during seedling culture, and water evaporation of the seeding trays is reduced.

Description

technical field [0001] The invention belongs to the technical field of rice planting and relates to rice seedling raising, in particular to a method for raising rice seedlings in a saline-alkali land greenhouse. Background technique [0002] The saline-alkali land has high salinity content, and it is difficult to grow seedlings after sowing. Therefore, most of the production uses the seedling machine transplanting method. In northern China, the temperature is low in early spring, so seedlings need to be raised in greenhouses. In the saline-alkali land greenhouse seedling cultivation, the seedling tray guest soil is used, and the latter substrate is sown and seedling-raised, and put into the greenhouse after sowing. According to the climate conditions, the water in the seedling tray is supplemented by spraying water. Due to the high temperature of the greenhouse and the large evaporation, the soil in the greenhouse will return to salt, and the salinity in the soil in the gre...

AI Technical Summary

Problems solved by technology

Especially in places where greenhouses have been used for many years to raise seedlings, the roots of the seedlings turn black, the seedlings turn yellow, and the phenomenon of dead seedlings is more serious, which restricts the production of rice in saline-alkali land.