摘要
本文对白三叶在湖北低山丘陵区的越夏性进行了初步研究,并对越夏返青标准进行了探讨。结果表明,白三叶越夏性是品种(类型),高温干旱的适应性,生长年限及栽培管理条件综合因素的反应,而夏季高温下的土壤含水率是影响白三叶越夏率的主要限制因子。白三叶草地土壤(0～10cm)含水率(x_2)与越夏率(y-1)的相关关系为y=-26.59+7.15x(r=0.8846)达到显著性差异(p<0.05)。
The oversummering survival adaptability of white clover in hilly area was evaluated. the oversummering survival rate and seedling emergence was determined, too。The results indicate that oversummering survival rate is connected with varieties, adaptability to high heat and drought, growth years of the white clover plants,cultivation etc. The soil moisture is a major limit factor in summer. There is a significant positive correlation between soil moisture in the surface soil (0～10cm)and the oversummering survival rate. The linear regression equation is Y=-26.59+7.15X.
出处
《中国草地》
CSCD
1992年第2期6-10,共5页
Grassland of China
关键词
白三叶
越夏性
土壤含水率
White clover
oversummering survival rate
