Two-year-triple-cropping high-yield cultivating method of winter wheat and summer corn

Abstract

An embodiment of the invention provides a two-year-triple-cropping high-yield cultivating method of winter wheat and summer corn and relates to the field of agriculture. The two-year-triple-cropping high-yield cultivating method includes that high-quality varieties of wheat and corn which are golden wheat 26 and Lingyu No.4 respectively are selected; the growth period of the two varieties is 343 days in total, solar heat resources are sufficiently utilized, multiple cropping in normal does not miss the farming season; the summer corn with the green is watered in the milk-ripe stage; in case of years with low-temperature corn seasons, sowing time of the golden wheat 26 ranges from October 5th to October 20th on the basis of increase of seeding rate, the lowest accumulated temperature before the winter is ensured to be 580 DEG C, and the accumulated temperature of 180-220 DEG C is given to enable the Lingyu No.4 to be grouted and ripened sufficiently; when content of rapidly available phosphorus in the soil is higher than 25milligrams / kilogram, phosphatic fertilizer is centrally applied to the golden wheat 26 all year round; the Lingyu No.4 is mechanically and directly sowed in double seeds and wide distance on a hard land with wheat stubble without tillage; straws directly return to the field. By the two-year-triple-cropping high-yield cultivating method, resource productivity is improved, and food production level of Tianjin city is enhanced.

Description

technical field [0001] The invention relates to the field of agricultural planting, in particular to a high-yield cultivation method for two-year three-ripening of winter wheat and summer corn. Background technique [0002] Tianjin is located in the northern part of the North China Plain, with a frost-free period of about 210 days, 2,296 hours of sunshine, an annual average temperature of 12.7°C, an accumulated temperature of ≥0°C of 4,783°C, and an average annual precipitation of 553 mm. The rainfall is mainly concentrated in June, July, and August. Wheat Both the full growth period and the grain filling period of summer maize are in the dry season, which is a typical semi-arid and semi-humid area. It is the northern fringe area where wheat and corn are double-cropped in my country, and the heat resources are slightly tight. [0003] At present, Tianjin's grain production is facing multiple pressures. One is the pressure to ensure the total grain production under the circums...

AI Technical Summary

Problems solved by technology

[0004] Adopting the two-year three-cropping system is one of the main ways to increase the multiple cropping index. If the growth period of winter wheat and summer corn varieties is too long or the maturity period is delayed due to climate reasons, the harvesting time of the upper and lower crops is too long, too much precipitation or Insufficient water cannot sow and harvest in time, which affects the normal implementation of the two-year three-crop cultivation model