| 蒙海花,常春荣.常规施肥条件下香蕉根系时空特征[J].中国南方果树,2020,49(2): |
| 常规施肥条件下香蕉根系时空特征 |
| Spatio-Temporal Characteristic of Banana Root in Fieldat normal Fertilization system |
| 投稿时间：2019-08-07 修订日期：2019-10-07 |
| DOI：10.13938/j.issn.1007-1431.20190447 |
| 中文关键词: 香蕉 根系 田间 分布特征 |
| 英文关键词:Banana Root Field Distribution Characteristic |
| 基金项目:国家重点研发项目(No. 2017YFD0202101),海南省科技厅耕地改良项目(HNGDxf2017) |
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| 中文摘要: |
| 采用11次整体采样法研究了常规施肥和喷灌条件下香蕉定植后55d-295d田间分布特征。结果表明：定植后155d根系长度是定植后195d根系长度的22.5%,除了 定植后95天与115天外,根系长度在各观测期间差异显著； 在定植后的175d-195d根系增长量最大。香蕉根系在土壤表层的数量高于下层, 在定植后55d-95d,115d-135d,155d-295d三个时间段中各相邻的观测期根系伸长的范围变化不显著。苗期,根系主要分布在以假茎为中心,水平距离0-20cm、深度0-20cm的范围内,占根系总长68.0%；定植后115d-175d,香蕉的根系主要分布在以假茎为中心,水平距离0-40cm、深度0-20cm范围内,占根系总长的62.3%-85.7%；定植后的195d-295d香蕉的根系主要分布在以假茎为中心,水平距离为0-40cm、深度为0-30cm范围内,占根系总长83.7%；根系体积和鲜重与根长的空间分布规律一致。 |
| 英文摘要: |
| Banana(Musa AAA Cavendish subgroup cv.Brazil)root spacial and growing characteristics in whole growth phase in field , root quantitative indexs were measured by 11 times through whole sampling way every 20 days after transplanting 55day - 295day, at normal fertilizing and sprinkling irrigation system. The results were shown that banana root length of 155 day after transplanting was 22.5% to that of 195 day; root length had significant diffence between two vicissitudinary measured stages except for that of 95 day between 115 day, the most change of root quantitative indexs were shown between 175 day and 195 day after transplanting. Banana root distribution quantity in top layer was more than that in under layer, in the course of 55 day to 95 day, 115 day to 135 day, 155 day to 295 day after transplantting respectively, between two vicissitudinary stages, there were no evident difference in spatial range. No more than 95 day, root distributed in level 0-20cm from the center of pseudostem and 0-20cm in depth, ratio of root length to the total length was 68.0%；115 day to 175 day, 0-40cm in level and 0-20cm in depth, were 62.3%~85.7%；more than 195 day, 0-40cm in level and 0-30cm in depth, was 83.7%, and root volume, fresh weight were consistent with the root length. |
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