Method using shallow-buried drip irrigation and protected sowing to cultivate alfalfa in arid areas

Abstract

The invention discloses a method using shallow-buried drip irrigation and protected sowing to cultivate alfalfa in arid areas. The method selects Xinjiang Medicago sativa ssp. sativa variety with autumn dormancy level being 3-4 or WL354 alfalfa variety and includes: preparing before sowing, sowing, arranging shallow-buried drip irrigation zones, performing field management and pest control and harvesting. The method has the advantages that the shallow-buried drip irrigation is utilized to guarantee water and fertilizer uniformity and increase the yield of alfalfa, water can be saved, the growth time of alfalfa can be prolonged, the cutting times of alfalfa can be increased, and the method has high reference value for the high-yield cultivation and processing and utilization of alfalfa in the arid areas and is suitable for being popularized and used.

Description

technical field [0001] The invention relates to the technical field of agricultural cultivation, in particular to a shallow-buried drip irrigation alfalfa protective seeding and cultivation method in arid areas. Background technique [0002] At present, the planting area of ​​12 major alfalfa producing provinces in my country has reached 1.4878 million hectares, the total output of hay is 9.388 million tons, and there are 130 processing enterprises. Among them, Gansu, Ningxia, Shaanxi, Inner Mongolia, and Xinjiang ranked the top 5, with planting areas of 522,400, 380,000, 200,000, 168,300, and 124,900 hectares, and total hay production of 3.5 million, 2.17 million, and 1.3 million hectares respectively. , 820,000 and 889,000 tons. At present, my country has basically formed the water-saving alfalfa base in the desert oasis area of ​​the Hexi Corridor, the alfalfa base in the arid and semi-arid area of ​​the Loess Plateau, the grassland agricultural alfalfa base in the Ordos...

AI Technical Summary

Problems solved by technology

Single-sowing alfalfa has strong sandstorms in spring, large evaporation, and strong ultraviolet rays, which affect its emergence and growth. Moreover, there are certain risks in top-seeding alfalfa, especially after the cold spring, which leads to the failure of alfalfa planting.

However, flood irrigation will cause soil compaction, resulting in the failure of alfalfa to emerge normally and reducing the density of alfalfa. Moreover, flood irrigation requires ridges, which increases labor costs, is time-consuming and laborious, and ridges will affect the speed of mowing, raking, and baling. Reduce the service life of the machine, and at the same time flood irrigation consumes water, and the irrigation and fertilization are uneven, which affects the yield of alfalfa. The flood irrigation stops watering one week before cutting each time. After cutting, the alfalfa needs to grow for a week before watering and fertilization can be carried out, which is serious. Affects the growth of alfalfa

The surface drip irrigation effect is also relatively good, but the drip irrigation belt seriously affects the surface mechanical operation, seriously reduces work efficiency, and the drip irrigation belt is very damaged