摘要
采用盆栽土培法,在不同施磷量条件下,测定柠条生物量、根冠比、吸磷量变化对石灰性土壤pH值、EC值、土壤有效磷及碱性磷酸酶的影响,筛选出能显著提高柠条产量和饲料磷标准的施磷量。研究结果表明,(1)施P2O5100mg/(kg土),可以提高柠条产量18 5%;(2)施P2O5100mg/(kg土),可以提高柠条含磷量到0 57%,达到饲料标准。(3)柠条还可以使石灰性土壤中碱性磷酸酶活性提高到43 4μg酚/100g土,达显著水平。因此,施P2O5100mg/(kg土)是最佳施肥量。
In the Peashrab experiment in pot with lime-soil, the results showed peashrab yields increased with levels of phosphorus,the shoot of the yield of P_(3 )grew by 18.5%,the root by 12.4% ; pH of CK decreased rapidly by 0.88and EC of CK increase by about 20.0% ,and activity of phosphate-enzyme of soil grew 48.9μg/100g soil.
出处
《山西农业大学学报（自然科学版）》
CAS
2004年第4期342-346,共5页
Journal of Shanxi Agricultural University(Natural Science Edition)
