





摘要 [目的]研究促進白刺(Nitraria tangutorum)硬枝扦插生根成苗的最佳生長調節劑種類、濃度及其組合。[方法]以白刺2~3年生直徑>0.4 cm的木質化枝條為插穗材料,進行不同生長調節劑、不同濃度處理的扦插對比試驗。[結果]不同處理下白刺扦插苗的成活率、苗高、總根數、最長根長差異顯著;其中NAA 400 mg/L處理下白刺的成活率最高,達57.69%,復硝酚鈉400 mg/L處理下白刺的苗高最高,為38.00 cm;IBA+NAA 200 mg/L處理下白刺的總根數最多,為15.00條;NAA-Na 600 mg/L處理最長根長最長,為35.00 cm。[結論]經隸屬函數法綜合評價,IBA-K+NAA-Na 600mg/L處理的隸屬函數值最高,是適合白刺扦插的最佳處理。
關鍵詞 白刺;硬枝扦插;生長調節劑;NAA-Na;IBA-K
中圖分類號 S 482.8;S 723.1+32 文獻標識碼 A
文章編號 0517-6611(2024)22-0107-04
doi:10.3969/j.issn.0517-6611.2024.22.021
開放科學(資源服務)標識碼(OSID):
Effects of Different Growth Regulators on Hardwood-Cutting of Nitraria tangutorum
GAN Xiao-xue WANG Wen-shu ZHANG Bin-wu1,2 et al
(1.Alxa League Forest and Grassland Research Institute,Alxa,Inner Mongolia 750306;2.Alxa Jilantai Desert Ecosystem Positioning Observation and Research Station,Alxa,Inner Mongolia 750306)
Abstract [Objective]In order to find out the best kind, concentration and combination of growth regulators for promoting rooting of hardwood cutting of Nitraria tangutorum. [Method]In this study, the different growth regulators and concentrations of different treatments were used to control the cutting of woody twigs of Nitraria tangutorum with diameter >0.4 cm from 2 to 3 years old. [Result]The results showed that there were significant differences under different treatments in survival rate, seedling height, total number of roots, longest root length;and the survival rate of treatment NAA 400 mg/L was the highest, up to 57.69%. The seedling height of treatment Sodium Nitrophenolate 400 mg/L was the highest, up to 38.00 cm. The total number of roots of treatment IBA+NAA 200 mg/L was the highest, up to 15.00 articles. The longest root length of treatment NAA-Na 600 mg/L was the highest, up to 35.00 cm. [Conclusion]After comprehensive evaluation by the membership function method, the membership function value of IBA-K+NAA-Na 600 mg/L treatment is the highest, which was the best treatment for the hard wood cutting of Nitraria tangutorum.
Key words Nitraria tangutorum;Hardwood-cutting;Growth regulators;NAA-Na;IBA-K
白刺屬(Nitraria L.),白刺科(Nitrariaceae)落葉灌木,內蒙古地區分布有4種,主要分布在干旱荒漠地帶、鹽漬化沙地等[1-3] 。白刺屬植物在干旱荒漠沙地上匍匐生長,沙埋后易萌發新枝和產生不定根,萌生枝條能夠攔截流沙形成“白刺包”,有明顯的固沙作用,是優良的防風固沙樹種,具有重要的生態防護價值[4]。白刺果實富含多種營養物質成分,可食用、藥用、飼用,其果實、葉片為主要的藥用、食用部位[5-7];中藥材鎖陽更是寄生于其根部,因此,白刺也具有較高的經濟價值[8]。近年來,隨著白刺屬植物在荒漠鹽堿地治理等方面的生態效益及其各項經濟價值的逐步開發應用,致使社會對高質量白刺苗木的需求逐年增加。
白刺屬植物苗木繁育包括播種育苗、扦插育苗(嫩枝扦插、硬枝扦插)、壓條分株繁殖等多種方法[9]。……