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为了降低退耕还林地多年生沙棘(Hippophea rhamnoides L.)的干枯死亡率和提高结果能力,研究了不同修剪措施对沙棘树体更新复壮和结果能力的影响。结果表明:冬季落叶后剪除直径0~1.5cm枝条后,沙棘树体萌发新枝的能力、结果量和果实品质相对最高,发枝量、单株产果量、果实可溶性糖含量和Vc含量分别为32.16个/株、2.54kg、3.03%和3 652.62mg/kg,较对照CK分别提高了270.93%、61.78%、35.87%和37.98%;果实有机酸含量为2.67%,较对照CK降低了9.49%。冬季落叶后剪除直径0~1.5cm枝条处理的所有测定指标与对照CK相比,均达到了显著水平(P<0.05)。鉴于冬季落叶后剪除直径0~1.5cm枝条处理对沙棘树体更新复壮和提高结果能力的相对最佳效果,建议采用这一措施来复壮树体和提高结果能力。
In order to reduce the mortality and improve the ability of Hippophea rhamnoides L. on the conversion of cultivated land to forest, the effects of different pruning measures on regeneration and rejuvenation of seabuckthorn trees and their fruiting ability were studied. The results showed that the ability of new seabuckthorn seedlings to germinate, the highest yield and the highest fruit quality were obtained after the deciduous branches with diameter of 0-1.5 cm after deciduous leaves were deciduous in winter. The amount of defoliation, fruit yield per plant, soluble sugar content and Vc content were 32.16 plants per plant, 2.54kg, 3.03% and 3 652.62mg / kg respectively, which were 270.93%, 61.78%, 35.87% and 37.98% higher than that of control CK respectively. The organic acid content of fruit was 2.67% . Compared with control CK, all indexes of cuttings with diameter of 0-1.5 cm after winter deciduous cutting reached the significant level (P <0.05). In view of the relatively optimal effect of deciduous trees with diameter of 0-1.5 cm after winter deciduous trees on the regeneration and rejuvenation of seabuckthorn trees and the ability to improve the results, this measure is recommended to rejuvenate the tree and improve the ability of the results.