High-yield cultivation method improving grain number per spike and grain weight of winter wheat and advancing maturity

Abstract

The invention discloses a high-yield cultivation method improving grain number per spike and grain weight of winter wheat and advancing maturity. The method is especially suitable for winter wheat ultra-high yield cultivation in wheat and corn double cropping heat shortage regions. Main steps and principles comprise: (1) building a shed frame with height of 20-25 cm, after vernalization of the winter wheat, in the late ten days of January, covering three layers of plastic films on a rye, increasing temperature to promote the winter wheat to turn green early; (2) after temperature rises, keeping temperature under the film stable through reducing the number of film layers, in mid-and-late March, uncovering shed walls on two opposite sides to ventilate, training cold resistance for 5-7 days;(5) in the end of March and beginning of April, when wheat in the shed joints, uncovering a third layer of pore film. Through covering the plastic film, time from turn green to jointing is prolonged,so spikelet number is increased. After the film is uncovered, temperature is relatively low, after wheat jointing, growth becomes slow, floweret deterioration number is reduced, flowering is brought forward, setting percentage is improved, grouting time is prolonged, and wheat matures in advance, and dry hot wind is avoided and grain weight is improved.

Description

technical field [0001] The invention relates to a new crop planting method, which is especially suitable for super-high-yield cultivation of winter wheat under the condition of two-cropping winter wheat-summer corn in the northern part of the North China Plain and the accumulated temperature is extremely tense, and can also be applied to the balance of winter wheat and summer corn crops Increase production. Background technique [0002] (1) Winter wheat-summer corn double-cropping production in the northern North China Plain is seriously insufficient. Winter wheat-summer corn double-cropping is the main cropping system for agricultural production in the North China Plain. The heat resources in the North China Plain decrease from south to north, and the accumulated temperature drops from 5,200°C in Xinyang in southern Henan Province to 4,200°C in Baoding in central Hebei Province. The northern part of the North China Plain is controlled alternately by the winter and summer m...

AI Technical Summary

Problems solved by technology

[0005] So far, there has been no breakthrough in the new method of increasing the grain number and grain weight of winter wheat by reasonably increasing the accumulated temperature in the wheat field, delaying the ear development process of winter wheat, and effectively prolonging the effective growth period of the crop.