氮磷钾复合肥对上海“JD-1结缕草”草坪耐践踏性的影响  

Effect of compound fertilizer on the trampling resistance of Shanghai JD-1 Zoysia

作　　者：朱小春[1] 孙吉雄[2] 安渊[1] 

机构地区：[1]上海交通大学农业与生物学院草业科学研究中心,上海201101 [2]甘肃农业大学草业学院,甘肃兰州730070

出　　处：《草业科学》2007年第7期96-100,共5页Pratacultural Science

基　　金：上海市农委四新项目"耐践踏草坪新品种推广示范"(沪农科推字2004;第2-1-6号)

摘　　要：通过践踏器模拟践踏,研究氮、磷、钾复合肥对践踏胁迫下上海“JD-1结缕草”草坪耐践踏性的影响,结果表明:非践踏区和践踏区内,结缕草Zoysia japonica的地上生物量和绿叶率随着复合肥用量的增加而增加。践踏胁迫下,50 g/m2处理的地上生物量和绿叶率显著高于不施肥(P<0.05);施肥可使践踏结缕草叶片中游离脯氨酸含量增加,丙二醛含量和细胞膜透性降低,光合作用增强,从而,提高了上海“JD-1结缕草”的耐践踏性。氮、磷、钾复合肥能够有效减轻践踏对结缕草的胁迫程度,提高结缕草草坪的耐践踏性。The effect of compound fertilize on the trampling resistance of Shanghai JD-1 Zoysia was tested through simulative tramper. The results showed that both aboveground phytomass and green grass rate were increased along with the application amount of compound fertilizer with or without the trampling stress. Under the trampling stress,aboveground phytomass and green grass rate in Treatment N2 （50 g/m^2 , N-P-K compound fertilizer） were significantly higher than those in NO （no fertilizer） （P〈0.05）, while there was no significant difference between Nl（30 g/m^2） and NO. Fertilization increased the content of proline, decreased the contents of MDA and electric conductivity rate, and enhanced the photosynthesis rate. It could be concluded that compound fertilizer could improve the trampling resistance of Shanghai JD-1 Zoysia and 50 g/m^2 were optimum application rate.

关 键 词：氮磷钾复合肥 上海“JD-1结缕草” 耐践踏性 

分 类 号：S688.4[农业科学—观赏园艺]