摘要
对云南省南亚热带湿热地区的思茅曼中田畜牧场臂形草草场不同定植年限中每年施氮素与否对草场的产草量及养分含量的影响进行了调查和统计分析。结果表明：通过每年施氮肥，能明显地提高全草场的产量和质量，如以１９８６年（１２０）＊与１９８６（０）＊两不同处理在定植的第五年进行比较，一次刈割测产的干物质产量每公顷可提高达１４７．２％、粗蛋白含量则提高２３３．７％，处理间均可达到极为显著的差异（Ｆ＝９．９０＞Ｆ０．０１＝３．３６）。后随着年限的推移，施氮肥的草场产量可保持一定的稳定性之后，再出现稳中有降，而不施氮肥的处理则在定植的第三年急剧下降。为此作者等提出了试验见解，希望对曼中田以及其类似地区禾本科草场的管理上能起到一定生态循环系统的指导作用，并为抑制害草飞机草的孳生危害提供措施。
The report has been reviewed by us about the research work (inclusive of investigation and statistical analysis) done at the Mangzhongtian Livestock Ranch, Simao, where situated in the southern subtropical and humid warm areas of Yunnan Province, that the planting conditions of signalgrass(Brachiaria decumbens Stapf cv.Basilisk) were established successfully for animal feeding purposes on the grassland construction. All sorts of such grasslands right here were fixing every year starting from 1985 up to 1990 by applying a certain amount of nitrogenous fertilizer versus not any fertilizer application treatment as check for comparison in our experimentation. The result showed us that in the signalgrass pastureland with N fertilizer application, the grass yields plus qualities were simultaneously increased at a highly significance level statistically indicated by F=9.90%>F 0.01 =3.36%. For example, here we may compare the two treatments aforementioned, 1986(120) * with 1986(0) *, which had been established well in the fifth year, for explanation. The grass yield on DM (Dry Matter) basis together with the CP (Crude Protein) content, in average, of the former treatment were all increased by 147.2% and 233.7% respectively. By the present, with the passage of time elapsed, the pastureland of signalgrass whenever in use by applying N fertilizers, was maintained steadily in high yieldage situation during a certain time period, howver, would just show a little decreasing trend after a distinctly sound maintenance for land usage. but on the contrary, the grasslands untreated with N fertilization, after the third year of establishment, would of course, decline sharply at last. Therefore, the authors will put forward here with the rationalization suggestion that we are hoping that at the Mangzhoungtian Ranch and other similar ranches like that, the grassland management measures to be taken, should be able to take effect on guidance from our experimental results for the future extension work project in view of the ecological environment system along with our cultural control measure over the noxious weed, Feijicao (Chromolaena odorata L.) R.M.King et H.Robinson) invasion with success in past several years by collaborators at our Center. Note: * 1986(120)=120 kg/ha N fertilizer applied in the year 1986 in treatment; 1986(0)=untreated control treatment in the same year.
出处
《四川草原》
1997年第1期25-30,33,共7页
Journal of Sichuan Grassland
关键词
氮肥
飞机草
臂形草
草场
产量
Nitrogenous fertilizer, Feijicao (Chromolaena odorata (L.) R.M.King et H.Robinson), signalgrass (Brachiaria decumbens Stapf cv.Basilisk), Ecological Environment System
