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Position: Home > Articles > Influence of Nitrogen Application and Cutting on Production Characteristic of Stapf ex Massey cv.Narok Prataculture & Animal Husbandry 2008 (5) 10-12+16

施氮和刈割对纳罗克非洲狗尾草生产特性的影响

作  者:
张美艳;邓菊芬;尹俊
单  位:
云南省草山饲料工作站;云南农业大学草业科学系
关键词:
纳罗克非洲狗尾草;施氮水平;刈割频度;分蘖数;生育期
摘  要:
试验采用施氮和刈割二因素析因试验设计,研究了不同的施氮和刈割组合对纳罗克非洲狗尾草(Setariasphacelata(Schum) Stapfex Massey cv.Narok)分蘖数和生育期的影响。结果表明:施氮对分蘖数的影响由大到小为75kg/hm2>50 kg/hm2>25 kg/hm2,25 kg/hm2与其余两水平差异显著(P<0.01)。刈割对分蘖数的影响由大到小为一年刈割3次>一年刈割2次>一年刈割4次。处理N1E2、N1E3、N2E2、N2E3、N3E2、N3E3的生育期都不同程度地被推迟。施氮和刈割改善纳罗克非洲狗尾草生产特性的最佳处理为施氮75kg/hm2和一年刈割3次。
译  名:
Influence of Nitrogen Application and Cutting on Production Characteristic of Stapf ex Massey cv.Narok
作  者:
ZHANG Mei-yan1,DENG Ju-fen2,YIN Jun2(1.Department of Prataculture Science,Yunnan Agricultural University,Kunming 650201,China;2.Yunnan Grassland and Feed Management Section,Kunming 650225,China)
关键词:
Stapf ex Massey cv.Narok;Nitrogen level;Cutting frequency;Tillering number;Growth stage
摘  要:
Based on factorial design of nitrogen application and cutting,the trial researched the influence of the two factors on tillering numbers and growth stage of Stapf ex Massey cv.Narok.The results indicated that the effect of nitrogen application on tillering numbers was in order as following: 75 kilograms per square hectare >50 kilograms per square hectare >25 kilograms per square hectare,the variance between twenty-five kilograms per square hectare and other two factors was significant(P<0.01);and the effect of cutting frequency on tillering numbers was in order as following: cutting three times a year> cutting twice a year >cutting four times a year;the growth stage of N1E2、N1E3、N2E2、N2E3、N3E2、N3E3 was postponed in a certain way.The best treatment that nitrogen application and cutting improved production characteristic of Stapf ex Massey cv.Narok was nitrogen application with seventy-five kilograms per square hectare and cutting three times a year.

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