Neosinocalamus affinis is a bamboo species distributed most widely and cultivated for a long time. The following problems about it is discussed in this paper.
1) Tile growth of the bamboo species under various stand conditions shows that there is no significant correlation between the density of the clump of the bamboo and the stand conditions, that the density is limited mainly by the thickness of soil, and that the height and the breast-height diameter of the bamboo correlate with the altitude above sea level.
2) It is shown that the diameter and the height of the bamboo and its clump density decrease with the decrease in thickness and humidity of the soil from the valley to the top of the slope when the series of the bamboo in the valley is investigated,
3) Study on the growth and development of the bamboo shoots shows that the increment of the bamboo correlate mainly with yesterday′s humidity and today’s temperature. The growth curve exhibits tow peaks for one day; the first is before 10 a.m., the second is after 3 p.m.. The number of the bamboo shoots which appeared above the ground correlate with the thickness of soil, whereas the number of the bamboo shoots which disappeared above the ground is mainly limited by the height of the mother bamboo and the number of the bamboo shoots which appeared above the ground. The number of healthy bamboo shoots is mainly affected by the thickness of soil and the bamboo height.
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