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经过３ａ观察研究，初步明确了江苏淡竹笋期生长规律：（１）出笋期为４月下旬到５月中旬，历时２５ｄ左右。（２）退笋数与出笋数的相关系数ｒ＝０．９７９，全林退笋率为８０％，且随时间的持续逐渐上升。退笋高度在５０ｃｍ以下均有发生，退笋原因主要是养分供应不足和虫害。（３）成竹数与出笋数变化趋势一致。（４）成竹高生长历时４５ｄ左右，总生长量、月平均生长量分别为９７５，２３．７８ｃｍ。中后期生长较快。平均日高生长大于平均夜高生长，高生长与气温等因子密切相关。
After 3 years of observational studies, the growth pattern of bamboo shoots in Jiangsu Province was initially clarified: (1) The shoot-out period was from late April to mid-May and lasted about 25 days. (2) The correlation coefficient between the number of returned bamboo shoots and the number of bamboo shoots was 0.979, the rate of all bamboo shoots was 80%, and the number of bamboo shoots returned gradually increased with the passage of time. The height of the retreat bamboo shoots have occurred below 50cm, the main reason for retreating bamboo shoots is insufficient nutrient supply and insect pests. (3) the number of bamboo into bamboo shoots and the trend of change consistent. (4) The growth rate of bamboo was about 45 days. The total growth and monthly average growth were 975 and 23.78 cm respectively. Rapid growth in the late. Average daily height growth is greater than the average night height growth, high growth and temperature and other factors are closely related.