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研究不同施肥处理对白三叶分枝格局和土壤利用强度的影响。结果表明，白三叶最合适的分枝角度为６０°，分枝能容忍的最大拥挤是４０°的扇形区域；整个克隆以源株为中心向四周生长形成六边形轮廓。同源株的分枝角度存在某种调节机制，施肥对新形成的分枝角度有微调功能。低施肥处理时，白三叶表现“利用策略”；高施肥处理时，植株表现“占居策略”。
The effects of different fertilization treatments on the branching pattern and soil utilization intensity of white clover were studied. The results showed that the most suitable branch angle of white clover was 60 °, and the maximum crowding tolerance of branch was 40 °. The whole clone grew hexagonal around the source strain. Homologous strains of branching point of view there is a certain regulatory mechanism, fertilization on the newly formed branch angle fine-tuning function. Low-fertilizer treatment, white clover performance “utilization strategy”; high-fertilizer treatment, the plant performance “occupancy strategy.”