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本试验于1960─1962年在杭州进行,试验结果证明:任何一种密植程度,在生长的初期,叶面积指数增加较慢;而到生长的后期,叶面积指数均达4米~2/米~2或以上,群体下层的消光程度亦大。在本试验密植范围以内,不同密植区的单位面积肉质根的产量差异不多;而单株肉质根重量的差异较大。每一密植区的根及叶的重量分布频率曲线,不是单峰曲线,而是多峰曲线。表示群体中的个体生长条件差异很大。试验还指出:肉质根重量与地上部重,肉质根重与肉质根直径,肉质根直径与木质部直径,及木质部直径与根“颈”部直径之间,均有一定的数量的相关关系。这些关系,可以为采种母株的选择及产量预测的参考。
The experiment was carried out in Hangzhou from 1960 to 1962. The results of the experiment showed that the leaf area index increased slowly at any planting density in the early stage of growth, and the leaf area index reached 4 m ~ 2 / m at the later stage of growth ~ 2 or more, the lower the level of extinction group is also large. Within the density range of this experiment, there was not much difference in the yield of fleshy roots per unit area in different densely populated areas; however, the difference of fleshy root weight per plant was significant. The root of every densely populated area and leaf weight distribution frequency curve, not a single peak curve, but the multi-peak curve. That the individual groups in the growth conditions vary widely. The experiment also pointed out that the fleshy root weight and aboveground weight, fleshy root weight and fleshy root diameter, fleshy root diameter and xylem diameter, and xylem diameter and root “neck” diameter between a certain amount of correlation. These relationships can be used as reference for seed selection and yield prediction.