毛竹施肥试验研究

毛竹林氮、磷、钾、锌正交设计施肥试验结果表明：适宜的施肥量能显著增加毛竹林出笋数、退笋数和新竹株数，对新竹产量影响最大的是磷肥和氮肥，其后依次是钾肥和锌肥。毛竹林第一次施肥用尿素６００ｋｇ／ｈｍ２、过磷酸钙２２５ｋｇ／ｈｍ２、硫酸钾３７５ｋｇ／ｈｍ２、硫酸锌６ｋｇ／ｈｍ２时新竹产量最高。

Study on the Fertilization Experiment of Phyllostachys pubescens

By means of the N,P,K and Z fertilization experiment with the orthogonal design for Phyllostachys pubescens forests,the results indicate that the suitable fertilization amount can notably increase the bamboo shoot emergence number,the bamboo shoot degeneration number and the new bamboo number of Ph.pubescens forests.The maximal effect on the new bamboo yield is P and N and then is K and Z.The new bamboo yield is maximal by adopting the following fertilization amount for the first fertilization of Ph.pubescens forests:600kg of urea per hm 2,225kg of calcium superphosphate per hm 2,375kg of potassium sulfate per hm 2 and 6kg of zinc sulfate per hm 2.