不同氮素施用量对“邯郸”狗牙根草生长和草坪质量的影响  

Effects of Nitrogen Rate on the Growth and Turf Quality of " Handan" Bermudagrass

作　　者：李志辉[1] 赵玉靖[1] 李会彬[1] 边秀举[1] 王丽宏[1] 范光宇[1] 

机构地区：[1]河北农业大学,河北保定071001

出　　处：《安徽农业科学》2009年第22期10480-10481,共2页Journal of Anhui Agricultural Sciences

摘　　要：[目的]对河北农业大学筛选出的野生栽培品种“邯郸”狗牙根草坪进行不同氮肥用量研究，以期为该品种在冀中南地区的推广应用提供理论依据和技术指导。l方法]试验采用随机区组设计，氮肥施用量设4个水平，分别为高（N2 9g／m2）、中（N2 6g／m2）、低（N2 3g／m2）和对照4个处理，3次重复，共12个小区，每个小区面积为1m2。所有小区磷钾肥施用量为P2O5 4g／m2和K2O4g／m2。在狗牙根生长季节（5～10月），按上述施肥量于每月22日施肥一次，年施肥6次。草坪修剪高度4cm，修剪频率视草坪生长快慢而定。对草坪进行适量灌溉以保持无干旱胁迫。草坪质量评分按国际NTEP9分制评分标准，草屑积累量测定采用烘干法。[结果]结果表明，在华北地区进行“邯郸”狗牙根草坪栽培，对中高质量要求的狗牙根草坪，以中氮（N2 6g／m2）处理的草坪效果较好。[结论]施用氮肥可以有效提高狗牙根草坪的色泽和密度，明显改善草坪质量，延长狗牙根草坪的绿色期；草坪修剪积累的草屑量随施氮量的增加也随之增加。[ Objective ] The paper aimed to study effects of Nitrogen rate on the growth and tuff quality of wild cuhivars ＂ Handan ＂ bermudagrass selected by Agricultural University of Hebei which expected to provided theoretical basis and technical guidance for popularization and application of this variety in middle and south Hebei Province. [ Method] Test designed at random, amount of nitrogen fertilizer designed as high ＂N2 9 g/m2＂, middle ＂N2 6 g/m2＂ and low ＂N2 3 g/m2 ＂and control of 4 treatments, 3 times repeat, total 12 area of l m2. Amount of ni- trogen fertilizer of all the area were： P2Os 4 g/m2 and K20 4 g/m2. In the growth season of bermudagrass （ May-October ）, 22th of every month were fertilized, 6 times a year. mowing height of tuff was 4 cm and mowing frequency depended on the growth speed, adequate irriga- tion in order to keep no-drought stress. Tuff quality score were followed by international NTEP 9 scores standard, clipping yields were meas- ured by drying method. [ Result ] The results showed that bermudagrass cultivated in North China, regarding the middle-high quality bermuda- grass, middle nitrogen treatment had the better effects. [ Conclusion] Nitrogen fertilizer can effectively enhance color and density, improve turf quality, prolonged the green period of bermudagrass tuff; Clipping yield increased significantly with nitrogen applied rate increased.

关 键 词：狗牙根 草坪色泽 草坪密度 草坪质量 草屑量 

分 类 号：S688.4[农业科学—观赏园艺]