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十多年来,我市蔬菜保护地生产发展迅速,出现了土壤次生盐渍问题,尤其是玻璃大棚更为严重.为解决这个问题,我们于1988年利用盛夏高温的休闲时间,在玻璃大棚内进行了种植耐盐作物苏丹草试验,以期抑制地面蒸发返盐,达到改良保护地土壤的目的.一、试验方法 试验地为堡镇堡兴村和菜园村的2只玻璃大棚,面积共800M~2,种植吸盐作物苏丹草,用种20kg,合每100M~2用种2.25kg.种植苏丹草前,分别采用5点取样法,取土深20cm,上厚薄较一致的土样,混合成试验前土样(1号样).8月6日播种苏丹草,行距30cm,条播盖土.播前浸种20小时,播后沟灌,保持畦面基本湿润.8月13日基本齐苗,8月20日灌水1次,9月12日苏丹草高约2m时收割,3点采样平均每M~2产量2.83kg.割后取土样(方法同前)为2号样,送市土肥所化验.苏丹草后茬种植芹菜,生长正常,且长势良好,亩产2000kg以上.
More than a decade, the rapid development of vegetable production in our city, there has been a problem of soil secondary salinization, especially in the glass greenhouse is more serious.In order to solve this problem, we use summer high temperature leisure time in 1988, In order to restrain the evaporation of salt from the ground and achieve the purpose of improving the soil of the protected area I. Test Methods The test was conducted in two glasshouses of Baoxing Village and Caiyuan Village in Baozhen with a total area of 800M ~ 2, planted sudangrass sucking salt crops, with species 20kg, combined with per 100M ~ 2 species 2.25kg. Sudan grass before planting, respectively, using 5 sampling method, taking soil depth 20cm, the thickness of more consistent soil samples, mixed Into the test before the soil sample (No. 1) .On August 6 sowing Sudan grass, row spacing 30cm, strip broadcast cover soil before sowing for 20 hours after sowing, sowing ditch irrigation to maintain the basic moist noodles on August 13 basic Qi Miao, August 20 irrigation 1, Sudan grass on September 12 about 2m harvest time, 3:00 sampling an average of M ~ 2 yield 2.83kg. Mowing take soil samples (the same method) for the 2 samples, to send the market soil Fertilizer Laboratory tests. Sudan grass planting celery growing, normal growth, and good growth, more than 2000kg per mu.