Combined cultivation method of sand corn and associated plant

Abstract

The invention belongs to a combined cultivation method of sand corn and an associated plant. The associated plant has strong and early nitrogen fixation selecting capability and does not compete with the corn for fertilized annual herb of Vicia sativa L.; the corn is planted in a two-row stripped mode; the hill spacing of strip rows is the product of strip spacing 60, row spacing 40 and plant spacing 28-30cm; the planting density is from 4500 plants / mu to 4700 plants / mu; and an intercropping mode taking combined cultivation with the corn as a core is adopted. A test proves that the corn yield and the water utilization rate are directly proportional to the biomass of the Vicia sativa L. in the combined cultivation of the corn and the Vicia sativa L. Under the condition that the fertilization quantity and the irrigation quantity of a corn field are not increased, the early biological coverage on the field is obviously increased; the ineffective evaporation of soil is further converted into the effective transpiration of the plant; the biological nitrogen fixation is increased; the solar biological converting capability is enhanced; and the purpose of increasing the corn yield and the water utilization rate is achieved.

Description

technical field [0001] The invention belongs to a new corn planting technology which utilizes the positive interaction relationship between plant species to protect main crops and alleviate continuous cropping obstacles. Background technique [0002] Sandstorms in sandy areas are seriously harmful in spring, and the ground biological coverage at the seedling stage is small. Especially in the arid and semi-arid areas of Northwest China, the bare ground is large and the soil is severely eroded by wind. Crops are often subjected to disasters such as sand beating and wind cutting. The environment is harsh. In order to alleviate these hazards, the focus is on the construction of peripheral windbreaks and sand-fixing vegetation and the construction of farmland shelterbelt networks. There is a lack of field biological measures centered on main crops to improve the microenvironment suitable for the growth of main crop seedlings and increase crop yield and moisture. usage efficiency...

AI Technical Summary

Problems solved by technology

In the past, crop rotation and intercropping reduced the harvested area of ​​the main crops, and it was often difficult to implement them in the era when the benefits of the main crops were maximized; although some intercropping and intercropping reduced the sown area of ​​the main crops slightly, due to complex management and Difficult to promote due to high cost

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