CAJ | 학술논문

国立草地研究所位于日本中部的西那须地区,在其所辖人工草地的放牧试验区内,进行了以下实验:(1)研究不同放牧压对地下生物量的影响(1974-1981年),(2)研究不同施肥水准对地下生物量的影响(1982-1989年).在与上述相同的放牧样地内,除去了放牧条件的差异(以相同的放牧压和施肥水准),继续进行了5年的放牧试验(1990-1994).结果表明地下生物量(包括新鲜的根和地下茎)的季节和年度变化较大,呈现出随着放牧年限增加而年年递减的趋势.
국립초지연구소위우일본중부적서나수지구,재기소할인공초지적방목시험구내,진행료이하실험:(1)연구불동방목압대지하생물량적영향(1974-1981년),(2)연구불동시비수준대지하생물량적영향(1982-1989년).재여상술상동적방목양지내,제거료방목조건적차이(이상동적방목압화시비수준),계속진행료5년적방목시험(1990-1994).결과표명지하생물량(포괄신선적근화지하경)적계절화년도변화교대,정현출수착방목년한증가이년년체감적추세.
In a grazing pasture of the National Grassland Research Institute, which was located at Nishinasuno area of Tochigi in Japan, the temporal changes in underground biomass were reported as the following grazing experiments: 1) How two different grazing intensities influence the underground biomass (1974-1981), and 2) How two different nitrogen application levels influence the underground biomass in the pasture ecosystem (1982-1989).The grazing experiments were continued from 1990 to 1994 in the above-mentioned grazing area,which were done at the same conditions (same grazing intensities and nitrogen application levels).The underground biomass showed noticeable differences among seasons and years and tended to decrease from year to year.