用混合表土和小朋友玩耍的泥沙（50/50分量）作为底材之用，同时可建立以乾果树草组成的区域来作喂食和挖掘之用。
Substrate can be a 50/50 mix of topsoil and play sand, and can include areas of dry orchard hay for feeding and burrowing.
以五年生富士苹果树为试材，研究了叶面喷施锌肥对光合作用的影响。
Fuji apple trees of five years old were used as materials in the experiment. The effect of spraying Zn on leaves on photosynthesis was studied.
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