粮粮三茬套种光能利用特点的初步探讨

• 机 构: 华北农业大学农业气象组,华北农业大学农业耕作组,
• 出 处: 气象科技资料
• 发表日期: 1977年S2期
• 关键词: 光能利用 玉米地 种麦 套种玉米 光合面积 共生期 种植制度 农业学大寨 玉米苗期 玉米幼苗

随着社会主义革命的深入及“农业学大寨”群众运动的蓬勃发展,近年来,农田基本建设与生产水平的不断提高,华北平原的种植制度正在发生重大的变化。其动向之一是粮粮三茬套种方式的出现。其典型的做法是带距7.5或10尺,其中畦宽5.5及8.0尺,种麦10—16及24行,在麦收前25—35天于2.0尺

With the deepening of the socialist revolution and the vigorous development of the mass movement “learning from Dazhai in agriculture”, the capital construction and production level of farmland have been continuously increasing in recent years. The planting system in the North China Plain is undergoing major changes. One of its trends is the emergence of three cropping intercropping methods. The typical practice is to take a distance of 7.5 or 10 feet, of which 5.5 and 8.0 feet wide, 10-16 and 24 lines of wheat, 25-35 days before wheat harvest at 2.0 feet