Method for planting alfalfa in moderately severe carbonate saline-alkali soil on large scale

Abstract

The invention discloses a method for planting alfalfa in a moderately severe carbonate saline-alkali soil on a large scale. The method comprises the steps as follows: (1), broadcasting fully rotten a farming manure, diammonium phosphate and potassium sulfate on the surface of the moderately severe carbonate saline-alkali soil in the rainy season of from the sixth to the eighth months, and uniformly spraying coal-washing wastewater; (2), ploughing, leveling and irrigating the moderately severe carbonate saline-alkali soil; (3), selecting alfalfa seeds of a salt-tolerant and drought-resistant variety, and soaking the seeds by using ABT rooting powder; (4), covering the soaked alfalfa seeds with bactericides with alfalfa root nodule bacteria; (5), coating the alfalfa seeds covered with the bactericides; (6), sowing the coated alfalfa seeds into the moderately severe carbonate saline-alkali soil; and (7), after seedling emergence, carrying out field management. The method can be used for planting the alfalfa in the moderately severe carbonate saline-alkali soil on a large scale, and has the characteristics of high seedling emergence speed, high seedling percentage, simplicity for operation, suitability for mechanical operation, easiness in manual control and the like.

Description

technical field [0001] The invention relates to the technical field of grass planting in saline-alkali land, in particular to a large-scale planting method of alfalfa in saline-alkali land with moderate to severe carbonate. Background technique [0002] Saline-alkali soil is a general term for various types of saline soil, alkaline soil and other different degrees of salinization and alkalization. The common feature of various types of saline-alkali soil is that the soil contains significant saline-alkali components. The accumulation of salt not only leads to the imbalance of soil nutrients, but also reduces soil permeability, resulting in the growth of most plants being inhibited to varying degrees, or even dead. Harmful effects on production. Salinization is the manifestation of the soil degradation process, and its severity is increasing day by day. It has become a worldwide resource problem and ecological problem, and has attracted widespread attention from all over the...

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Problems solved by technology

[0008] Patent Document 1 (CN 101904265B) discloses a method for cultivating alfalfa in light saline-alkali cultivated land to solve the problems of low seedling emergence rate and low yield when the existing alfalfa planting method is used in saline-alkali land, but this method is difficult to apply to Large-scale planting of alfalfa in medium-severe saline-alkali land, especially in moderate-severe carbonate saline-alkali land

At present, there are still few effective cases of large-scale planting of alfalfa in medium-severe carbonate saline-alkali land at home and abroad, especially in the lack of in-depth and systematic research on soil treatment, seed treatment and improvement of emergence rate.

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