摘要
以10年生早实核桃‘绿岭’为对象,研究了重回缩、拉枝、重回缩结合拉枝,以及自然生长对树干液流速率、液流通量、水势、净光合速率、蒸腾速率、水分利用效率及果实产量和品质的影响。结果表明,重回缩、拉枝、既重回缩又拉枝和放任生长4种修剪方式下树体整个生长季的液流通量分别为0.58、1.04、0.64L·h-1和0.95L·h-1,液流速率分别为4.61、7.52、5.19cm·h-1和7.35cm·h-1,液流速率和液流通量均以拉枝的最大;叶水势分别为-1.153、-1.267、-1.068 MPa和-1.317 MPa,以既重回缩又拉枝的水势最高;净光合速率分别为2.19、2.50、3.25μmol·m-2·s-1和1.45μmol·m-2·s-1;株产分别为2.94、3.51、3.53kg和2.21kg,以既重回缩又拉枝处理的产量最高;核桃脂肪含量分别为65.43%、67.55%、68.52%和64.77%,总蛋白含量分别为20.68%、21.23%、21.77%和19.83%,可溶性蛋白含量分别为2.16%、2.23%、2.27%和2.11%,3项指标均以既重回缩又拉枝处理最高。
In order to determine an appropriate pruning method of adult precocious walnut trees, 10 a walnut trees of ’Lvling’ were used as materials to study sap flow velocity, sap flow flux, leaf water potential, net photosynthetic rate, transpiration rate, water use efficiency, yield and fruit quality of four pruning methods （heavy cutting-back, bending branch, heavy cutting-back with bending branch and natural pruning） in 2013. The results showed that the sap flow velocity of these four pruning methods were 4.61,7.52,5.19 cm·h^-1 and 7.35 cm·h^-1, respectively, and sap flow flux of them were 0.58 ,1.04,0.64,0.95 L·h^-1, respectively,and sap flow velocity and flux of bending branch were the biggest among all the treatments; leaf water potential of these four pruning treatments were -1.153、-1.267、-1.068 MPa and -1.317 MPa, respectively, and that of heavy cutting-back with bending branch was the biggest; net photosynthetic rate of them were 2.19,2.50,3.25 μmol·m^-2·s^-1 and 1.45 μmol·m^-2·s^-1 respectively; the yield per plant of these four pruning methods were 2.94, 3.51, 3.53 kg, and 2.21 kg, respectively, and that of heavy cutting-back with bending branch was the highest; the walnut oil content of these four pruning methods were 65.43%, 67.55%, 68.52% and 64.77%, respectively, and the total protein content of them were 20.68%, 21.23%, 21.77% and 19.83% respectively, and soluble protein content of them were 2.16%, 2.23%, 2.27% and 2.11%, respectively, and these three indicators of heavy cutting-back with bending branch were all the highest ones among all the treatments.
出处
《西北林学院学报》
CSCD
北大核心
2015年第1期108-115,共8页
Journal of Northwest Forestry University
基金
国家自然科学基金(201004093)
河北省科技支撑计划项目(11230115D)
关键词
修剪
绿岭核桃
生理效应
pruning
Lvling walnut
physiological
