Ridging, mulching and rain collecting planting method for alfalfa in dry-farming areas

Abstract

The invention discloses a ridging, mulching and rain collecting planting method for alfalfa in dry-farming areas. The ridging, mulching and rain collecting planting method for alfalfa in dry-farming areas comprises the following steps of improved variety selection, wherein a drought-resisting and saline-alkaline-tolerant variety and a high-yield variety suitable for the local land are selected; seed processing, wherein after the seeds are cleaned and impurities are removed, the seeds are aired for 1-2 days in the sunlight; planting soil preparation, wherein the soil is prepared in a fine mode, weeds are removed, the soil is ploughed as deep as 25-30 cm until the soil has no obvious clods and is loose upwards and solid downwards; base fertilizer application, wherein phosphorus and potassium compound fertilizer or organic fertilizer serves as the base fertilizer, and a little nitrogenous fertilizer is applied; sowing in proper time, wherein the alfalfa in dry-farming areas of the northwest of Shanxi province is suitable for being sown in the first twenty days of April, but the sowing of the alfalfa needs to accord with the local conditions so that the seedlings can emerge in order. The ridging, mulching and rain collecting planting method for alfalfa in dry-farming areas is a drought-resisting, moisture-increasing and yield-increasing technology integrating ridging, precise sowing in lines, mulching and agricultural water-saving flow collection, can obviously reduce water evaporation caused by wind erosion as the ridging planting method is adopted, improves low temperature, and improves the emergence rate of seedlings and the biological yield of alfalfa in the first year.

Description

technical field [0001] The invention relates to a method for planting alfalfa ridge film for rain collection in dry farming areas. Background technique [0002] Northwest Shanxi is located on the east side of the Loess Plateau, the northern boundary of the agricultural-pastoral ecotone in northern my country and the lower limit of rainfed agriculture, and is a relatively typical ecologically fragile area. Its climate belongs to arid continental monsoon climate, with an average annual precipitation of about 400mm, and spring is a period of intense evaporation. Agricultural production mainly relies on natural precipitation, and the distribution of precipitation is uneven. Most of the precipitation is concentrated in July-September. Most of the precipitation is ineffective and ineffective precipitation or heavy rain less than 5mm. Runoff loss and evaporation loss coexist, which is not conducive to crops' impact on water effective absorption. Moreover, due to excessive human e...

AI Technical Summary

Problems solved by technology

[0004] In Northwest Shanxi, due to the cold weather in winter, winter sowing is not conducive to the overwintering of alfalfa seedlings, and spring sowing is conducive to the rooting of alfalfa, but dry spring and strong wind have become the key factors that endanger the survival of alfalfa seedlings. Traditional alfalfa planting methods