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以猕猴桃组培盆栽苗为试材,通过在栽培介质中添加不同浓度的糠醛渣,研究糠醛渣对幼苗生长的影响。结果表明,取自河南新乡的碱性土和市售有机基质在分别加入5%、10%和20%的糠醛渣后,和对照相比,前者土壤pH值下降范围为0.38~0.80,后者为0.36~0.65;添加糠醛渣后幼苗生长均受到不同程度的抑制,高浓度条件下叶片黄化明显,猕猴桃幼苗的株高和叶片SPAD值均显著下降,新乡土处理组的株高降幅都在40%以上,叶片SPAD值降幅超过16%,有机基质处理组株高降幅超过77%,叶片SPAD值降幅超过20%;新乡土3个处理组和对照相比,叶片长宽均无显著性差异,有机基质3个处理组的叶片长宽和对照相比都显著下降。结论:糠醛渣虽然可以降低两类栽培介质的土壤pH值,但对猕猴桃幼苗的生长产生抑制效果。
The effects of furfural residue on seedling growth were studied by adding different concentrations of furfural residue to the culture medium of kiwifruit. The results showed that compared with the control, the alkaline soil and commercially available organic matrix obtained from Xinxiang, Henan Province, decreased by a factor of 0.38 ~ 0.80 after adding 5%, 10% and 20% furfural residue, respectively, Was 0.36-0.65. The growth of seedlings was inhibited to varying degrees after addition of furfural residue. The leaf yellowing was obvious under high concentration conditions. The plant height and leaf SPAD value of Kiwifruit seedlings decreased significantly. The height reduction of Xinxiang soil treatment group was 40% or more, the leaf SPAD value decreased more than 16%, the organic matrix treatment group height decreased more than 77%, leaf SPAD value decreased more than 20%; Xinxiang three treatment groups compared with the control, leaf length and width were no significant difference , The leaf length and width of the three organic matter treatment groups were significantly decreased compared with the control. Conclusion: Although furfural residue can reduce soil pH of two kinds of media, it can inhibit the growth of kiwifruit seedlings.