竹腔(蔸)施肥对雪灾后毛竹林生长的影响

Effects of Bamboo Cavity(Stump) Fertilization on the Growth of Phyllostachys edulis after Snow Hazards

设置4种施肥方式:竹腔施毛竹增产剂BNP、竹蔸施尿素、竹腔施BNP+竹蔸施尿素、竹腔施植物生长调节剂GGR,不施肥为对照,试验研究了不同施肥方式对雪灾后毛竹林生长的影响。结果表明:毛竹竹腔(蔸)施肥,可以明显提高毛竹林立竹数和平均胸径,促进雪灾后毛竹林尽快恢复;连续施肥3年后,毛竹林立竹数和平均胸径分别较对照提高16.8%和5.6%。不同施肥方式比较,以竹腔施BNP+竹蔸施尿素效果最好,其次为竹腔施BNP和竹蔸施尿素,而竹腔施GGR则对毛竹胸径生长有明显的促进作用。这几种施肥方式均值得在生产中推广应用。

The effect of fertilization on the growth of Phyllostachys edulis after snow hazards was studied by using 4methods of bamboo cavity fertilization including bamboo production agent（BNP）,urea,BNP ＋ urea and plant growth regulator（GGR）,with no fertilization as a control. The results showed that bamboo cavity fertilization could evidently increase the number of culms and the average DBH of Ph. edulis,and promote the bamboo forest recovery as soon as possible after snow hazards. After 3 years of continuous fertilization,the number of culms and DBH of Ph. edulis increased by 16. 8% and 5. 6% compared with that of the control. With the comparison between the different application methods,cavity applied BNP ＋ urea was found with the best effect,followed by BNP and urea,while the cavity applied GGR had a significant effect on promoting the growth of bamboo DBH. These fertilization methods are worthwhile to be applied and promoted in practices.