伐桩施肥对撑绿杂交竹出笋及新竹生长的影响  

Influences of stump fertilizing on shoot and new bamboo growth of Bambusa pervariabilis × B. grandis

作　　者：闫德民[1] 张思玉[1] 董文渊[2] 

机构地区：[1]南京森林警察学院林火研究中心,南京210023 [2]西南林业大学职业技术学院

出　　处：《林业科技开发》2014年第2期92-94,共3页China Forestry Science and Technology

基　　金：中央高校基本科研业务费专项资金(编号:LGZD201403);云南省中青年学术技术带头人后备人才基金(编号:2007PY01-17);南京森林警察学院森林保护学科建设项目(编号:XK201327)

摘　　要：撑绿杂交竹是我国西南地区退耕还林工程中广泛种植的优良丛生竹类。利用伐桩施肥技术,研究了氮肥、磷肥和钾肥3种肥料的不同配比对撑绿杂交竹出笋数、退笋率、新竹高度和胸径等生长指标的影响。结果表明:伐桩施肥能够有效的促进撑绿杂交竹提早发笋并抑制退笋,显著提高新竹胸径和高度;伐桩施肥明显改善了新竹的营养状况,不同施肥处理的1年生竹竹叶的叶绿素含量与对照相比提高显著。伐桩施肥综合效果以每丛撑绿杂交竹施入尿素50 g、过磷酸钙30 g、氯化钾45 g的配比为最佳。Bambusa pervariabilis × B. grandis was an excellent sympodial bamboo, which was widely cultivated in the southwest in China of the Grain for Green Project. Influences of stump fertilizing on sprout shoot number, degraded shoot rate, height, diameter at breast height （ DBH）, etc. were studied with different mass ratios of three nutrients ： nitrogen, phosphate and potassium fertilizers. Results indicated that stump fertilizing brought forward sprout date of new bamboo, inhibited the degrading shoot rate effectively and increased height and DBH of new bamboo. Stump fertilizing improved the nutrient condition of the new bamboo obviously, the chlorophyll content of new leaves were remarkablely higher than that of the CK.And the optimum ratio of three fertilizers was with urea 50 g, calcium superphosphate 30 g and potassium chloride 45 g.

关 键 词：撑绿杂交竹 伐桩施肥 生长指标 最佳配比 

分 类 号：S795[农业科学—林木遗传育种]