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采用开沟躲盐技术在河套灌区盐荒地上种植耐盐的优良牧草,出苗率高达90~95%,保苗率达80~90%,分别比对照高4.7~19倍、4.7~80倍;亩产鲜草达182~3540.5公斤,比对照增产46~296倍。种植牧草后,土壤耕层含盐量由种草前的2.640%下降为1.395%。脱盐率为47%;土壤有机质、全氮、全磷、速效钾含量分别增加4~6.7%、0~30.6%、9.1~12.5%和14.2~44.0%。
Using the ditching and dodging salt technology, the fine forage with salt tolerance was planted on salt wasteland in Hetao Irrigation District. The germination rate was as high as 90-95% and the seedling protection rate was 80-90%, 4.7-19 times and 4.7-80 times higher than the control respectively. Fresh produce up to 182 ~ 3540.5 kg, 46 ~ 296 times more yield than the control. After planting forage, the salt content of soil plow decreased from 2.640% before planting to 1.395%. The desalination rate was 47%. The contents of soil organic matter, total nitrogen, total phosphorus and available potassium increased 4 ~ 6.7%, 0 ~ 30.6%, 9.1 ~ 12.5% and 14.2 ~ 44.0% respectively.