CAJ | 학술논문

在甘肃引黄灌区,通过田间小区试验,研究了不同施肥处理对新垦盐碱荒地土壤盐分剖面分布特征和脱盐效果的影响.结果表明：M12、M24处理在0~60 cm土层平均电导率显著低于其他施肥处理,60~80、80~100 cm土层各处理盐分含量变化没有明显规律；土壤脱盐和返盐主要发生在60 cm 以上土层,一季作物收获后的平均脱盐率大致在45%,第2年春季的返盐率大致在38%；M12、M24处理的脱盐效果最优,达到64.88%和68.37%；增施有机肥是提高土壤脱盐效果、抑制土壤返盐的有效措施.
재감숙인황관구,통과전간소구시험,연구료불동시비처리대신은염감황지토양염분부면분포특정화탈염효과적영향.결과표명：M12、M24처리재0~60 cm토층평균전도솔현저저우기타시비처리,60~80、80~100 cm토층각처리염분함량변화몰유명현규률；토양탈염화반염주요발생재60 cm 이상토층,일계작물수획후적평균탈염솔대치재45%,제2년춘계적반염솔대치재38%；M12、M24처리적탈염효과최우,체도64.88%화68.37%；증시유궤비시제고토양탈염효과、억제토양반염적유효조시.
Effects of different fertilizers on soil salt distribution and desalting efficiency in newly re-claimed alkali-saline land of the Yellow River area in Gansu Province were studied by field plot experiment. The results showed that the average conductivity of M12 ,M24 treatment was significantly lower than the other fertilization treatment in 0~60 cm layer.The changes of soil salt content in the 60~80,80~100 cm layer had no obvious rule in every treatment.Soil desalination and resalinization mainly occurred in the lay-er above 60 cm,the average desalination rate was about 45% after the first season crops harvest and the av-erage resalinization rate was about 38% in spring of the second year.M12 ,M24 treatment were optimal in the effect of desalination,attained to 64.88% and 68.37%.This explained that applying organic manure was an effective measure to improve soil desalting efficiency and inhibit resalinization.