论文部分内容阅读
河南省新乡县洪门乡处于古黄河背河洼地,据历史记载1,900年前就是盐碱地。在1963年治理前80%的耕地为盐碱地,粮食亩产154斤,棉花亩产23斤。洪门乡在中国农业科学院农田灌溉研究所的帮助下,采取排、灌、平、肥综合措施,改良了盐碱地。十多年来粮食亩产持续超千斤,棉花超百斤和双百斤。洪门乡的排水任务主要是排涝和排盐。排涝要求排地面水,沟要密,排盐要求排地下水,沟要深。因此在排水配套上采取深、浅沟结合的方式。洪门乡的干沟是东孟姜女河,沟深3.5—4米,常年排地下水,对洪门乡面貌的改变起了重大的作用。支沟深度2.5
Hongmen Township, Xinxiang County, Henan Province in the ancient Yellow River backwater depressions, according to historical records 1 900 years ago is the saline-alkali land. In 1963, 80% of cultivated land before the treatment was saline-alkali land, 154 mu of grain per mu and 23 kg of cotton per mu. With the help of the Institute of Farmland Irrigation, Chinese Academy of Agricultural Sciences, Hongmen Township adopted comprehensive measures of drainage, irrigation, flattening and fertilizer to improve saline-alkali land. For more than a decade, the per-mu yield of grain has surpassed that of the last one, and the cotton has over one hundred jin and two jin of jin. Hongmen drainage task is mainly drainage and salt drainage. Drainage requirements Pai surface water, ditch should be dense, drainage requirements row of groundwater, ditch to deep. Therefore, drainage facilities to take deep, shallow ditch combination. Hongmen Township, the ditch is the East Meng Jiang River, ditch deep 3.5-4 meters, perennial drainage, the appearance of Hongmen Township played a significant role in the change. Branch trench depth of 2.5