Method for cultivating alfalfa in low- salt and -alkali cultivated land

Abstract

The invention discloses a method for cultivating alfalfa in a low- salt and -alkali cultivated land, relates to a method for cultivating the alfalfa and solves the problems of low rate of emergence, low yield and low alfalfa wintering rate in a saline and alkaline land by the conventional alfalfa planting method. The method comprises the following steps of: 1, turning over soil of the low- salt and -alkali land in autumn and forming ridges; 2, softening and air-drying alfalfa seeds before sowing; 3, ditching in spring, watering, sowing and preventing against insects and weeding; 4, mowing in an early flowering season and mowing once every 30 to 40 days until 20 days before frosting; 5, mowing for the last time after frosting; and 6, keeping 16 and 25 percent of the water content (mass) ofthe soil in an alfalfa land after reviving in a second year, performing normal fertilizer and water management and mowing. The rate of emergence of the method is between 80 and 90 percent, grass yield in a first year is 25 to 28 percent higher than that of the conventional method and wintering rate is between 78 and 92 percent. The method is suitable for cultivating the alfalfa in the low- salt and -alkali cultivated land.

Description

technical field [0001] The invention relates to a method for cultivating alfalfa. Background technique [0002] Alfalfa, known as the "King of Grass" and "Vitamin Feed", is one of the most widely cultivated and most important leguminous pastures in the world. It has the characteristics of high nutritional value, good palatability, and high digestibility, and it plays an important role in maintaining water and soil, protecting land and slopes, preventing soil organic loss, and improving the ecological environment in arid and semi-arid areas, and is becoming the focus of attention. Therefore, alfalfa plays a greater role in promoting social and economic development. [0003] At present, alfalfa planting is mainly distributed in Northwest, North China, and Northeast China. However, the existing technology in my country is suitable for planting in ordinary production fields, and is relatively mature. The planting methods are wide rows on ridges, soil suppression, and sowing aft...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the invention is to solve the problems of low seedling emergence rate, low yield and low alfalfa overwintering rate when the existing alfalfa planting method is used in saline-alkali land