施肥条件下柱花草生长早期构件生长规律的研究  

Effects of Fertilizing on Growth Law of Module of Stylosanthes guianensiasat Early Stage

作　　者：赵钢[1] 苏幸枝[1] 石秀兰[2] 张雅君[1] 

机构地区：[1]仲恺农业工程学院生命科学学院,广东广州510225 [2]仲恺农业工程学院园艺园林学院,广东广州510225

出　　处：《中国草地学报》2012年第6期32-35,共4页Chinese Journal of Grassland

基　　金：广东省自然科学基金(9151022501000013);广东省科技计划(2007A020300002-7)

摘　　要：研究了柱花草热研2号、热研10号、热研13号枝条、叶片等构件数量对不同N、P、K施量的响应。结果表明,随着施氮量的增加,柱花草叶片数、一级枝条数二级枝条数均逐步增加,叶片数在施氮量达到1g/盆或1.5g/盆时达到最大值;一级枝条在施氮量1.5g/盆或2g/盆时达到最大值,二级枝条在施氮量1g/盆或1.5g/盆时达到最大值。施磷可以促进叶片数量增加(P<0.05),当施磷量为2g/盆时叶片数量达到最多。当施磷量>2g/盆时,对一、二级枝条数量有促进作用。钾肥对柱花草叶片、枝条数量均具有促进作用,柱花草叶片数量和枝条数量均在施钾量为0.75g/盆时达到最大值。The response of module leaf and branch of three varieties of Stylosanthes guianensias cv.Reyan 2,Reyan 10 and Reyan 13 to different concentration of N,P and K were studied.The results showed that with increasing of the application rates of nitrogen fertilizer,the number of leaf,first branch,and second branch increased,and reached maximum at the rate of 1.5g/pot N.The module leaf could be facilitated by fertilizer P（P0.05） and its number reached maximum at the rate of 2 g/pot P.The first and second branch number reached maximum while the concentrate of P was over 2 g/pot.The number of module leaf and branch was facilitated by fertilizer K,the leaf and branch number reached maximum at the concentrate 2g/pot K.

关 键 词：施肥浓度 柱花草 构件 空间分布 

分 类 号：S541.9[农业科学—作物学]