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[目的]通过农业技术措施从源头上改善灰分、苯醇抽出物和木质素的含量,更好地利用竹资源。[方法]以1年生慈竹为材料,研究不同氮钾配比对慈竹灰分、苯醇抽出物和木质素含量的调控效应。[结果]结果表明:施肥处理慈竹的灰分、苯醇抽出物和木质素的含量与对照处理具有明显的差异。不同处理的灰分、苯醇抽出物含量均较对照有不同程度的升高,而木质素含量则比对照低。施肥处理后慈竹的灰分含量随K肥用量的增加而上升,受N肥用量影响不大。苯醇抽出物含量受N肥、K肥用量影响均不大。木质素含量随着N肥用量的增加逐渐降低,受K肥用量影响不大。处理N200K200木质素含量最低,其次是N200K50。[结论]对于木质素含量与灰分含量变化的协调,需考虑二者在慈竹生理上和利用中的重要性,设计更多不同肥料配比另作研究。
[Objective] To improve the content of ash, alcohol extract and lignin from the source by means of agricultural technology and make better use of bamboo resources. [Method] The 1-year-old Phyllostachys praecox was used as material to study the effects of different ratios of N and K on the contents of ash, alcohol extract and lignin in Phyllostachys pubescens. [Result] The results showed that the contents of ash, benzene alcohol extract and lignin of Silvicultural process bamboo significantly differed from the control. The content of ash and alcohol extract of different treatments increased to some extent compared with the control, but the content of lignin was lower than the control. The ash content of Phyllostachys praecox increased with the increase of K fertilizer application, little affected by the amount of N fertilizer. Phenol extract content by N fertilizer, K fertilizer dosage are not affected. Lignin content with the increase of N fertilizer dosage gradually decreased, little affected by the amount of K fertilizer. The lignin content of N200K200 was the lowest, followed by N200K50. [Conclusion] For the coordination between the changes of lignin content and ash content, the importance of both in physiology and utilization of Phyllostachys pubescens should be considered. More different proportions of different fertilizers should be studied separately.