There was significant positive correlation among the applied amount of nitrogen, percentage of diseased plant, index of disease and percentage of yield loss.
施氮量、病株率、病情指数、产量损失率间呈极显著正相关。
The results indicated that there existed hyperbola relationships between the density (x) of two weed's communities and the impairment loss percentage (y) of sugarcane yield.
两种草杂的种群密度(X)与甘蔗产量损失率(y)之间的关系呈双曲线关系。
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