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豫东虞城、兰考一带,地处黄河故道南侧,地表盐碱化比较严重,咸水区浅层地下水上淡下咸,矿化度一般3—5克/升,最高7.7克/升,以氯化钠、硫酸钠为主。用这种咸水浇地,往往由于使用不当,庄稼发黄,粮食减产,土地起碱变坏。因此,不少社队开凿的灌溉井,曾一度弃置不用。文化大革命以来,在毛主席革命路线指引下,为解决咸水利用问题,我们在豫东工作近十年,通过对600多眼井的调查和数千个土样化验资料对比,特别是总结了群众与咸水作斗争的经验,并与贫下中农一道连续进行了五年(1972—1976)的咸水灌溉试验,终于打破了所谓“超过1.7克/升不宜灌溉”的洋框框,解决了用3—5克/升咸水灌溉的技术问题,使咸水地区70%面积上的“废井”变活井。据统计,五年中各种作物平均增产率为:小麦36.2%,春玉米152.7%,夏玉米57.5%,
Yutong Yu, Lok Kao area, located in the southern side of the Yellow River old course, surface salinization is more serious, saltwater shallow shallow groundwater salinity, salinity generally 3-5 g / l, up to 7.7 g / l, Sodium chloride, sodium sulfate-based. With this salt water irrigated, often due to improper use, crop yellow, grain yield, the soil from the base deterioration. Therefore, many of the commune dug irrigation wells were once abandoned. Since the Cultural Revolution and under the guidance of Chairman Mao’s revolutionary line, we have been working in the eastern part of the island for nearly 10 years to solve the problem of saltwater utilization. Through a comparison of more than 600 wells and thousands of soil samples, The experience of the masses in combating salt water and the five-year salt water irrigation experiment with poor and middle-level peasants (1972-1976) have finally broken the so-called “framed more than 1.7g / l of irrigability” and solved the problem of using 3-5 grams per liter of salt water irrigation technology, so that 70% of salt water area on the “waste” into the well. According to statistics, the average yield of various crops in five years is: 36.2% of wheat, 152.7% of spring maize, 57.5% of summer maize,