林业科技开发Issue(5)：104-108,5.DOI:10.13360/j.issn.1000-8101.2014.05.026
不同修剪方式对成龄‘绿岭’核桃光合作用的影响
Heavy cutting-back and bending branch influence on photosynthesis of adult‘ Lüling’walnut
摘要
Abstract
In order to determine an optimum pruning method for adult precocious walnut trees,precociously 10 years old walnut trees of‘ Lüling’were used as materials to study the influences on crown relative air humidity,temperature, illumination,leaf net photosynthetic rate,transpiration rate,stomatal conductance,intecellular CO2 concentration and chlorophyll content by four pruning methods(trentment 1. heavy cutting-back,trentment 2. bending branch,trentment 3. heavy cutting-back with bending branch and natural pruning(CK))in 2013. The results showed that:the crown bore relative humidity and the intecellular CO2 concentrations of treatment 3 were 33. 60% and 233. 00 μmol/ mol ,which were the lowest among the four pruning treatments at 12: 00 in the middle August. The crown bore temperature and illumination of treatment 3 were 40. 43 ℃ and 86800 lx which were the biggest among the four pruning treatments. The crown net photosynthetic and the transpiration rate of treatment 3 were 8. 22 and 3. 33 μmol/(m2·s)which were the biggest among all the pruning treatments. The stomatal conductances of these four pruning methods were 0. 19,0. 21,0. 24 and 0. 16 mmol/(m2·s),respectively. The chlorophll a contents of treatment 1,2,3 and CK were 2. 41,2. 52,2. 79 and 1. 17 mg/ g respectively,and that of the treatment 3 was significant higher than those of treatment 1 and CK.关键词
‘绿岭’核桃/重回缩/拉枝/光合作用/叶绿素含量Key words
‘Lüling’walnut/heavy cutting-back/bending branch/photosynthesis/chlorophyll content引用本文复制引用
李美美,马华冰,赵爽,齐国辉,李保国,陈利英..不同修剪方式对成龄‘绿岭’核桃光合作用的影响[J].林业科技开发,2014,(5):104-108,5.基金项目
国家林业公益性行业科研专项（编号201004093）；河北省科技支撑计划项目（编号11230115D）。 （）
