沈阳地区土壤磷素状况及效力试验  

Soil Phosphorus Situations in Shenyang Area and Efficacy Experiment

作　　者：齐丹[1] 

机构地区：[1]沈阳市农业检测中心,沈阳110034

出　　处：《农业科技与装备》2012年第8期11-12,共2页Agricultural Science & Technology and Equipment

摘　　要：对沈阳地区农田土壤磷素的状况及磷肥效力进行调查。采取多点试验方法,测定耕地土壤中磷素含量,考察其对春小麦产量的影响。结果表明,沈阳地区主要耕地0～20cm耕层的有效P平均含量为9.9mg/kg,属于较低水平;90%的农田通过施P措施可增产15.0%～26.0%。说明土壤有效P是影响作物产量的重要因素,增磷是培肥磷素肥力的重要措施。A survey is conducted on the soil phosphorus situations and phosphate fertilizer efficacy in Shenyang area. Muhipoint experiment method is adopted to determine the phosphorus content in farmland soil and to examine its effect on the yield of spring wheat. The results show that the average content of available P in 0-20 cm plough layer in Shenyang area is 9.9 mg/kg, or of a relatively low level; 90% of farmland is capable of increasing yield of 15.0%-26.0% through application of phosphate fertilizer, which shows that soil available phosphorus is an important factor in determining crop yields and increasing phosphorus is an important measure.

关 键 词：土壤肥料 有效磷 磷肥效力 产量 沈阳地区 

分 类 号：S158.2[农业科学—土壤学]