Rotation mode capable of increasing yield of farmland in cold alpine zone

Abstract

The invention discloses a rotation mode capable of increasing yield of farmland in a cold alpine zone. The rotation mode capable of increasing the yield of the farmland in the cold alpine zone comprises the following steps: selecting a corn variety with strong drought tolerance and early maturity in early growth stage; and selecting a radix dipsaci asperoidis variety with strong cold resistance inlater growth stage. More specifically, in view of environmental characteristics, namely drought and rain in winter and spring as well as frequent early frost in autumn, of the cold alpine zone, the corn variety with strong drought tolerance and early maturity is selected for the early growth stage (the corn is sowed in 90-cm wide rows and 45-cm narrow rows with plant spacings of 40-50 cm after mulching in a spaced sowing way, each hole 3-4 grains); and the radix dipsaci asperoidis variety with strong cold resistance is selected for the later growth stage (the radix dipsaci asperoidis is sowedin interval rows between the corn in a hole-sowing way with row spacings of 45 cm and plant spacings of 25-30 cm, each hole 7-8 grains ). The rotation mode capable of increasing the yield of the farmland in the cold alpine zone adopts a grain and drug planting mode with highly efficient ecological cycle, and has reasonable layout. By changing a conventional corn monoculture mode into the corn-radix dipsaci asperoidis rotation mode, utilization efficiency of water, light and heat resources are greatly improved while ensuring low labor intensity and high operability, so that the rotation mode capable of increasing the yield of the farmland in the cold alpine zone is suitable for large-area promotion in vast alpine areas, especially in remote and backward alpine areas.

Description

technical field [0001] The invention belongs to the technical field of planting methods of crops, and in particular relates to a crop rotation method for improving farmland output in cold and high mountainous areas. Background technique [0002] The cold and high mountainous area is about 2,000 meters above sea level, and the rainfall is severely unevenly distributed. It is dry and rainless in winter and spring, and early frost occurs frequently in autumn. This kind of terrain is more common in poor areas in my country, with a vast area and rich sunlight resources. However, due to the general lack of facilities such as irrigation, many vegetables cannot be grown and the productive potential of the soil is not realized. How to use local cultivated crops according to local conditions, increase the yield and economic benefits per unit area of ​​soil in Lengliang mountainous areas, and protect the local fragile ecological environment while realizing high-quality and high-yield ...

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