| 土壤调理剂对土壤理化性质及甘蓝生理特性的影响 |
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| 引用本文： | 陈之群,孙治强.土壤调理剂对土壤理化性质及甘蓝生理特性的影响[J].农业工程学报,2005,21(Z2):53-56. |
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| 作者姓名： | 陈之群 孙治强 |
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| 作者单位： | 河南农业大学林学园艺学院,郑州,450002 |
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| 基金项目： | 河南省重大科技攻关项目(0322010900) |
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| 摘 要： | 试验研究了土壤调理剂对土壤结构性质和甘蓝根系活力、光合指标的影响.结果表明,施用调理剂后,处理两次、处理一次分别使20 cm和30 cm土层的容重下降7.3%、1.9%和4.6%、1.3%,孔隙度分别提高9.3%、2.8%和5.9%、1.9%;与对照相比,处理两次后的阳离子交换量在0～27 cm、27～45 cm土层分别增加5.7%和10.9%;甘蓝的根系活力,处理与对照相比达到1%的显著差异水平;改变了Pn的光合日变化曲线,提高了甘蓝对光强的适应能力,光合能力加强.
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| 关 键 词： | 土壤调理剂 甘蓝 土壤理化性状 光合特性 |
| 文章编号： | 1002-6819(2005)S-0053-04 |
| 修稿时间： | 2005年9月30日 |
Effects of soil conditioner on soil physical and chemical properties and physiological characteristics of cabbage |
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| Chen Zhiqun,Sun Zhiqiang.Effects of soil conditioner on soil physical and chemical properties and physiological characteristics of cabbage[J].Transactions of the Chinese Society of Agricultural Engineering,2005,21(Z2):53-56. |
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| Authors: | Chen Zhiqun Sun Zhiqiang |
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| Abstract: | The experiments were conducted to study the effects of soil conditioner on root activity and photosynthetic parameters of cabbage.The results indicate that soil conditioner could damage the relatively compacted(condition) of soil,and make porosity contributed reasonably.Treatment with 2(dw2) and dw1 could separately make the bulk densities decline by 7.3%,1.9% and 4.6%,1.3%, separately and make the porosity increase by 9.3%,2.8% and 5.9%,1.9% in soil layers of 0~20 cm and 0~30 cm,respectively.Compared with control,the CEC(cation exchange capacity) of dw2 increase by 5.7% and 10.9% in soil layers of 0~27 cm and 27~45 cm,the root activity of cabbage was significantly different,and the diurnal changes of Pn were influenced,with increasing the capability of photosynthesis and improving the adaptability to light intensity. |
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| Keywords: | soil conditioner cabbage soil physical and chemical properties photosynthetic properties |
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