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牧草再生与养份贮藏,刈割时期与次数的栽培技术研究,在我国草地学文献中报道甚少。我们在原始材料圃牧草种质特性观察研究中发现,一些多年生牧草播种当年刈割区域,翌年的产草量显著低于头年未刈区域,而且植株的各部也有很大差别。为论证这种现象,1982年至1983年进行了多叶老芒麦,阿坝老芒麦,802320老芒麦三种不同生态型草种,以及氮(尿素20斤)+磷(过磷酸钙50斤),单施氮(尿素20斤),不施肥三种处理,播种当年刈割和不刈割翌年产草量及其植株经济性状差异的研究。在试验小区以随机排列,重复四次,基本苗基本相等的条件下,所获结果播种当年不刈其经济效益高。
Forage regeneration and nutrient storage, mowing period and the number of cultivation technology research, in our grassland science literature rarely reported. We observed in the original material nursery forage germplasm characteristics of the study found that some perennial grass seeding mowing the current year, the following year’s grazing was significantly lower than the first year of uncollected area, and the various parts of the plant are also very different. In order to demonstrate this phenomenon, three different ecotypes of grass of Amomum villosum, Abba sibirica, 802320 Somniferum, and nitrogen (20 kg of urea) + phosphorus (superphosphate 50 Kg), single application of nitrogen (20 kg of urea), no fertilization three kinds of treatment, sowing and non-cutting mowing the following year the grass yield and economic traits differences. In the experimental plot randomly arranged, repeated four times, the basic seedlings are basically the same conditions, the results obtained sowing the year without mowing its high economic efficiency.