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冀中、冀南平原旱地浅色草甸土及盐渍草甸土小麦杂粮产区,群众素有麦后夏季休闲伏耕的习惯,称之为“留麦”、“晒麦”、“晒旱麦”或“杀旱麦”.即麦收后以30—60%的麦田不复种夏作物,而行休闲伏耕,一般是耕耠三遍,再种冬麦.构成三年四熟或四年五熟的轮作制.这种制度在华北冲积平原及关中地区颇为盛行.我省以衡水、邢台及沧州地区最为普遍.笔者1961年和1962年曾在衡水地区进行了调查研究和对比测定,觉得这一措施是克服旱、薄、碱以及劳力不足、实现全面增产的有效措施.留麦比茬麦有显著的增产效果,1962年衡水北沼大队留麦平均亩产166—199.2斤,比夏玉米茬麦平均亩产81.6斤增产103.4—144%,千粒重及其他生育性状,也有良好表现.1961年衡水专区七个县的统计资料表明,留麦平均亩产在75—110斤之间,茬麦平均亩产36—49斤之间,留麦每亩增产39—61斤,即54—111.6%.
Jizhong, dry land in Hebei plain light meadow soil and salt meadow soil grains of cereal production areas, the masses known as the summer after the summer wheat volumn plow habits, called “leave wheat”, “sun wheat”, “sun Dry wheat ”or“ dry wheat. ”After the wheat is harvested, 30-60% of the wheat fields are no longer planted with summer crops, This system is quite popular in North China alluvial plain and Guanzhong area.The province is the most common in Hengshui, Xingtai and Cangzhou.The author conducted surveys and comparative tests in Hengshui in 1961 and 1962 , Think this measure is to overcome the drought, thin, alkali and labor shortage, to achieve an effective measure to achieve a comprehensive yield.Chernobit wheat crop has a significant yield-increasing effect, in 1962 Hengshui North Marsh Brigade persimmon average yield 166-199.2 kg, The average yield per mu of summer corn stubble was 81.6 kg and the yield was 103.4-144%, and the grain weight and other fertility traits were also good. The statistical data of seven counties in Hengshui Prefecture in 1961 showed that the average per mu yield of leave wheat was between 75-110 kg , The average yield per mu 36-49 kg of wheat, wheat yield per acre 39-61 pounds, or 54 111.6%.