摘要
取云南省广南畜牧场原生红砂壤土,在温室采用盆栽手段对指示植物海法白三叶进行矿物营养元素筛分和磷、钾施量试验。结果表明:影响海法白三叶在红砂壤上生长的主要矿物元素是磷、钾,其次为钼。施用磷肥效果明显,并且施磷量与白三叶地上部分生物量间呈极显著的直线正相关YP=0.851+9.93X(r=0.94)。初步推断以施24kg/hm2磷、26～52kg/hm2钾为白三叶当年定植的有效施用量。
A pot experiment was carried out the application rates of P and K to study the growth and yield of Trifoli-um repense L.cv.Haifa with the medium of red sandy soil from Guangnan County,Yunnan Province.The results showed that the major fertility factors in affecting the growth of Haifa were P,K and Mo on this soil.There was a highly significant linear positive relativity(Y=0.85+9.93X,r=0.94 )between Prate and dry matter(DM)yield of Haifa.The DM yield of Haifa was the optimum level for establishment when Pand K rates were24kg /hm 2 and26～52kg /hm 2 ,respectively.
出处
《四川草原》
2003年第5期29-30,共2页
Journal of Sichuan Grassland
