摘要
为了确定薄壳山核桃夏季修剪的最佳修剪时间和最佳修剪措施,以5年生薄壳山核桃优良品种‘波尼’（Carya illinoensis‘Pawnee’）为材料,研究夏季不同修剪时间、不同修剪措施对不同长度当年生枝条萌芽数和成枝力的影响。结果显示：未经修剪的枝条没有萌芽数,经过修剪的枝条均有一定的萌芽数。6月14日,对于20~50 cm的一年生枝条,短截1/5效果最好,平均萌芽数为1.67,10~30 cm的成枝力达到73.3%,且有〉30的长枝条;对于50 cm以上的一年生枝条,以短截1/3效果最好,平均萌芽数为2.75,10~30 cm的成枝力达到68.18%,〉30 cm的成枝力为18.18%。6月28日,20~50 cm和50 cm以上的枝条同样是分别短截1/5和短截1/3效果最好。因此,对于薄壳山核桃‘波尼’幼龄树,6月14日修剪效果最好,20~50 cm的一年生枝条短截1/5,50 cm以上的一年生枝条短截1/3有利于薄壳山核桃枝条的形成。
In order to determine the optimal pruning time and pruning measures of Carya illinoensis insummer, taking 5-year-old grafted seedlings of Carya illinoensis‘Pawnee＇as experimental materials, effectof different pruning time, different pruning measures on budding number and branching ability of Carya illinoensis‘Pawnee＇were studied. The results showed that the uncut branches had no budding, but pruningbranches had a certain number of budding. On June 14, 1/5 short-cutting had the best effect for the 20-50 cmannual branch, the average budding number was 1.67, branching ability（10- 30 cm） reached 73.3%, andhad 〉30 long branches; 1/3 short-cutting had the best effect for the 〉50 cm annual branch, the averagebudding number was 2.75, branching ability of 10^-30 cm and 〉30 cm reached 68.18% and 18.18%. On June28, 1/5 short-cutting and 1/3 short-cutting had the best effect for the 20-50 cm and 〉50 cm annual branch.Therefore, 1/5 short-cutting for the 20-50 cm annual branch and 1/3 short-cutting for the〉 50 cm annualbranch of pecan‘Pawnee＇young tree on June 14 were conducive to the formation of pecan branches.
出处
《中国农学通报》
2015年第25期124-127,共4页
Chinese Agricultural Science Bulletin
基金
江苏省农业科技自主创新资金项目"丰产优质薄壳山核桃新品种选育"[CX(12)2012]
关键词
薄壳山核桃
夏季修剪
萌芽数
成枝力
Carya illinoensis
summer pruning
budding number
branching ability
