一、麦棉两熟的演进早在建国前,太行山前平原水肥条件较好,部分下湿盐碱地棉区,就有以小麦为主间作棉花的种植方式。鉴于当时的历史条件,小麦亩产也不过100～150公斤;棉花亩产子棉仅100公斤左右,而且一半是霜后花。即使这样,棉花的收益也比种夏玉米、高梁为高。建国后,随着生产条件的改善,70年 First, the evolution of wheat and cotton two ripe As early as before the founding of the PRC, Taihang piedmont plain water and fertilizer conditions are better, part of the wetland saline cotton area, there are wheat-based intercropping cotton cultivation methods. In view of the historical conditions at that time, the output of wheat was only 100-150 kg per mu; cotton yield was only about 100 kg per mu, and half was spent on frost. Even so, the benefits of cotton than the summer corn, sorghum as high. After the founding of the PRC, with the improvement of production conditions, 70 years