CAJ | 학술논문

为合理利用盐碱化土地资源,提高土地利用率,在河西走廊盐碱土上连作紫花苜蓿.试验结果表明,紫花苜蓿连作5 a后,土壤含水量由试验前的28.5%降至9.8%,总孔隙度由45.2%升至58.4%,>0.25 mm团粒结构由38.5%上升到64.2%,全盐含量从7.3 g/kg降至2.2 g/kg,有机质含量由8.1 g/kg升至12.1 g/kg,土壤速效N、P、K含量也随之增加.种植紫花苜蓿不但改善了土壤结构,提高了盐碱土壤的生产力,同时也促进了畜牧业的发展和草畜平衡,减少了水土流失,改善了环境条件.
위합리이용염감화토지자원,제고토지이용솔,재하서주랑염감토상련작자화목숙.시험결과표명,자화목숙련작5 a후,토양함수량유시험전적28.5%강지9.8%,총공극도유45.2%승지58.4%,>0.25 mm단립결구유38.5%상승도64.2%,전염함량종7.3 g/kg강지2.2 g/kg,유궤질함량유8.1 g/kg승지12.1 g/kg,토양속효N、P、K함량야수지증가.충식자화목숙불단개선료토양결구,제고료염감토양적생산력,동시야촉진료축목업적발전화초축평형,감소료수토류실,개선료배경조건.
In order to make full use of saline-alkali soil resources and improve the land utilization rate, we planted alfalfa on saline-alkali soil continuously in Hexi corridor. The results showed that, after five years of continuous cropping of alfalfa, soil water content was decreased from 28.5% to 9.8%, with the total porosity increased from 45.2% to 58.4%, the granular structure (>0.25 mm) proportion increased from 38.5%to 64.2%, the total salt content reduced from 7.3 g/kg to 2.2 g/kg, the organic content increased from 8.1 g/kg to 12.1 g/kg, and the contents of K, P and N were also increased. Planting of alfalfa not only improved the soil structure and productivity of the saline-alkali soil, but also promoted the development of animal husbandry and the balance between forage and animal, and reduced the water and soil loss and improved the environment conditions.