氮磷钾肥对高羊茅生长及抗寒性的影响  

Effects of N,P,K fertilizer application on tall fescue growth and cold-resistance

作　　者：徐艳丽[1] 鲁剑巍[2] 周世力[3] 蒋细旺[3] 王运华[2] 

机构地区：[1]吉林师范大学图书馆,吉林四平136000 [2]华中农业大学资源与环境学院,湖北武汉430070 [3]江汉大学医学与生命科学学院,湖北武汉430056

出　　处：《植物营养与肥料学报》2007年第6期1173-1177,1184,共6页Journal of Plant Nutrition and Fertilizers

基　　金：武汉市重点攻关项目(20032003029);加拿大钾磷肥研究所(PPI/PPIC)资助

摘　　要：利用盆栽试验研究了氮磷钾肥对冷季型草坪草高羊茅生长、叶绿素含量及抗寒性的影响。结果表明,NPK配合施用能有效促进草坪草生长、叶绿素合成及提高抗寒性。NPK处理的叶片数、叶长及株高分别是不施氮处理的1.23、1.73和1.68倍,是不施磷处理的1.96、2.25和2.04倍。播种后100 d,NPK处理SPAD值分别比PK和NK处理高出2.53和3.14倍;越冬期NPK处理的脯氨酸(Pro)、丙二醛(MDA)和电解质渗透率(EL)分别是PK处理的313.6%、36.4%和13.4%,是NK处理的104.2%、14.0%和11.6%。试验结果还表明,磷肥对草坪草生长影响最大,氮肥次之,氮磷肥缺乏均降低草坪草抗寒性;钾肥施用与否对草坪草生长及抗寒性影响不大。说明氮磷钾肥合理施用能有效改善越冬期草坪质量。A pot experiment in greenhouse was conducted to study the influence of N, P and K fertilizer application on growth, chlorophyll content and cold-resistance of tall fescue （ Festuca arundinaces Schreb. ）. The results showed that combined application of N, P and K fertilizers could increase turf growth, chlorophyll synthesis and cold-resistance. The leaf number, leaf length and plant height of NPK （balanced fertilization） treatment were 1.23,1.73 and 1.68 times of those without N fertilizer, respectively, and were 1.96, 2.25 and 2.04 times of those without P fertilizer, respectively. The SPAD value of NPK treatment at 100 days after seeding increased by 2.53 and 3.14 times compared with those without N or P treatment, respectively. During winter, the proline （Pro）, malondialdehyde （MDA） content and leakage of electrolyte （EL） of NPK treatment were 313.55%, 36.43% and 13.36% of those without N fertilizer treatment and were 104.19%, 13.96% and 11.58% of those without P treatment. Among the three types of fertilizers, P fertilizer had the greatest influence on turf growth, followed by N fertilizer. Deficiency in N or P could decrease turf cold-resistance. K showed little effects on either turf growth or cold-resistance. The results indicated that balanced application of N, P and K fertilizers could improve turf quality during winter period.

关 键 词：高羊茅 施肥 草坪草生长 抗寒性 

分 类 号：S688.4[农业科学—观赏园艺] S147.5[农业科学—园艺学]