Dryland farming and water-saving cultivation method for maize in arid cropland in loess plateau

Abstract

The present invention relates to the technical field of maize cultivation and in particular to a dryland farming and water-saving cultivation method for maize in an arid cropland in loess plateau. Rotary tillage, drip irrigation tape laying, film mulching and seeding integrated operation is adopted, a narrow line is 40 cm wide, a wide line is 60 cm wide, ridges are formed in the wide row, a drip irrigation tape is laid, the ridges serve as rain collecting regions, furrows serve as planting regions, the slopes of the rain collecting ridges are 35 DEG, and the ridges are 30 cm high and are disposed in an east and west direction; mechanical hole sowing is performed, a degradable water-absorbing fiber ball is buried in each of front, rear, left and right sides of each hole, the hole spacing iskept at 24-27 cm, the sowing depth is kept at 3-4 cm, the line spacing in the furrows is kept at 40 cm, and the planting density is kept at 5000-5500 per mu; and the total ground is covered with a plastic film with the width of 120 cm and the thickness of 0.08 mm, the edge of the plastic film is fixed and pressed with soil so that the plastic film is prevented from being damaged by wind, film mulching is kept for 10 d, a mulching film clings to the ground or perforation is performed every other 50 cm in the furrows after rainfall. By using the dryland farming and water-saving cultivation method, the emergence rate and survival rate of seedlings may be increased, and meanwhile, the utilization efficiency of water may be remarkably increased.

Description

technical field [0001] The invention relates to the technical field of corn cultivation, in particular to a water-saving cultivation method for dry farming of corn in the loess dry area. Background technique [0002] Corn is the third largest crop in my country, and it is also an important source of forage and fodder for human meat, egg and milk production. The amount of corn per capita is regarded as one of the important indicators to measure the development of animal husbandry and people's living standards in a country or a region. my country is a country with a large population, and corn, as the most effective and flexible regulating variety, also shoulders the important mission of ensuring national food security. Corn is often supplemented by traditional flood irrigation in semi-arid areas. The water and nutrient utilization rate is low, the soil compaction is serious, the groundwater level rises in some areas, and the secondary salinization of the soil is intensified. ...

AI Technical Summary

Problems solved by technology

Corn is often supplemented by traditional flood irrigation in semi-arid areas. The water and nutrient utilization rate is low, the soil compaction is serious, the groundwater level rises in some areas, and the secondary salinization of the soil is intensified.