Method for planting alfalfa in saline-alkali soil

Abstract

The invention discloses a method for planting alfalfa in saline-alkali soil. The method comprises the following steps: deep application of a base fertilizer, a sowing process, irrigation, field management, a clipping process and greenness returning management. According to the invention, the soil structure is improved and the salt content of soil is reduced through soil preparation and deep application of the humic acid organic fertilizer. At the same time, a low-salinity environment is created in the germination period of alfalfa seeds by utilizing a drip irrigation mode, so that the seed germination and the seedling growth are promoted. Winter water for irrigation penetrates through a cultivation layer, so that the icing caused by water accumulation on the ground is avoided, and topdressing is carried out with the combination of irrigation by greenness returning water. In addition, a saline-alkaline-resistant alfalfa variety is selected as a recommendation variety, and the planting success rate is further improved. According to the method provided by the invention, the organic matter content of soil is increased before the alfalfa is planted, the disadvantages to the alfalfa germination and seedling growth caused by increased the salinity of dry soil in spring are overcome through the utilization of the drip irrigation method, conditions are created for normal growth of the alfalfa in the later stage, and the technical support for the production of high-quality alfalfa and the development of animal husbandry in saline-alkali areas is provided.

Description

technical field [0001] The invention belongs to the technical field of alfalfa cultivation, in particular to a method for establishing alfalfa in saline-alkali land. Background technique [0002] Alfalfa is a perennial leguminous forage, which is the most widely distributed cultivated forage in the world. It has been cultivated in my country for more than two thousand years. It contains essential amino acids, trace elements and unknown growth factors. It has high nutritional value and good palatability, and is known as the "King of Grass". At present, my country is speeding up the establishment of a ternary planting structure that coordinates the development of grain, economy, and feed in accordance with the overall requirements of "stabilizing grain, optimizing economy, and expanding feed". Starting from the pilot work of "reforming grain to fodder", vigorously developing the cultivation of alfalfa, silage corn and other forages, and building a forage production system have...

AI Technical Summary

Problems solved by technology

[0006] As another example, Chinese patent document CN 101904265A (patent number: 201010233703.0) discloses a method for cultivating alfalfa in light saline-alkali cultivated land, which solves the problem of low emergence rate, low yield and overwintering of alfalfa when the existing alfalfa planting method is used in saline-alkali land. low rate problem

However, this method is difficult to apply to the establishment of alfalfa in medium-to-severe saline-alkali land, especially because the operating procedures are cumbersome, and it is difficult to popularize and apply it on a large scale.

[0007] The potential absorption of alfalfa to soil salinity is limited, and it is a moderately salt-tolerant plant. There are still some difficulties in developing alfalfa planting in medium-to-severe saline-alkali land, which also limits the further expansion of alfalfa planting area.

At present, there are relatively few studies on the establishment of alfalfa in saline-alkali land, especially in the aspects of soil preparation, base fertilizer, variety, and seedling protection.