北大营示范场黑麦草引种与品比试验研究

Studies on the charcacteristics for the introduced cultivars of perennial ryegrass on Beidaying Demostration Farm

利用 1998年 2～ 11月在云南省北大营示范场引种的 10个黑麦草品种的观测资料 ,统计分析了在高、中、低 3种施肥水平下黑麦草的累计产量、月平均产量及其生长速度的变化规律 ,研究了影响产量的主导因子及其监测模型。结果表明 ,在 10个品种中 ,伯生 (BisonIntermdiate)及安巴瑟 (Embassy)具有良好的生产性能。黑麦草产量主要受气候、土壤肥力及品种等因素的影响 ,其中测草盘高度、降水量、蒸发量、日照时数和牧草生长天数等 5个因子 ,可以较好地模拟。

Using the observed data for introduced 10 cultivars of perennial ryegrass on Beidaying demostration farm in 1998, the accumulated yields, monthly average yields and pasture growth of perennial ryegrass under 3 levels(high, middle and low fertilization) were analyzed, and the principal factors affecting forage yields were studied in this paper. Results indicated that there was good production performance for Bison Intermdiate(No.9) and Embassy(No.8) in 10 cultivars. The yield of perennial ryegrass was mainly influenced by climate, soil fertility and cultivars. Especially, recordings of plate, rainfall, evaporation, hours of sunshine and days of forage growth were the key factors, which may accurately simulate,estimate the yield dynamics of perennial ryegrass.