Plant-density的用法和樣例：
例句
- Effect of Sowing Density on Biology Character and Yield of Tagetese recta L.
種植密度對萬壽菊生物學及產量性狀的影響。 - After selected various high yielding and hybrid varieties, their nutrient uptake pattern, interaction among fertilizer, varieties and plant density should be investigated.
近年來，我國選育出一批主要作物的高產品種和雜交種，應當研究它們的需肥特性，研究施肥與這些新品種及其種植密度等不同措施的關係。
