氮肥和种植密度对达乌里胡枝子的生长与生物固氮的影响
王银柳1,2, 耿倩倩1,2, 黄建辉1,2,*(
), 王常慧1, 李磊1,2, 哈斯木其尔1,2, 牛国祥1,2
), 王常慧1, 李磊1,2, 哈斯木其尔1,2, 牛国祥1,2
Effects of nitrogen addition and planting density on the growth and biological nitrogen fixation of Lespedeza davurica
WANG Yin-Liu1,2, GENG Qian-Qian1,2, HUANG Jian-Hui1,2,*(), WANG Chang-Hui1, LI Lei1,2, HASI Muqier1,2, NIU Guo-Xiang1,2
), WANG Chang-Hui1, LI Lei1,2, HASI Muqier1,2, NIU Guo-Xiang1,2
图4. 氮肥和种植密度对达乌里胡枝子根瘤形成或生长的直接和间接效应。图中线条表示作用路径显著(p < 0.05), 线条粗细表示效应大小, 黑色表示正效应, 灰色表示负效应。R 2表示解释率。
Fig. 4. Direct and indirect impacts of N addition rate and planting density on the root nodulation and growth of Lespedeza davurica. Lines indicate a significant effect (p < 0.05). Line thickness indicates relative effect size. Black lines represent positive effects, while gray lines indicate negative effects. R 2 indicates variation that can be explained. Pn, net photosynthetic rate.
