| 早实核桃不同生育期主要器官氮、磷、钾含量变化规律及特征 |
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| 引用本文： | 盖素芬,赵宝军,郑庆田,李冬生.早实核桃不同生育期主要器官氮、磷、钾含量变化规律及特征[J].经济林研究,2002,20(2):63-66. |
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| 作者姓名： | 盖素芬 赵宝军 郑庆田 李冬生 |
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| 作者单位： | 辽宁省经济林研究所,辽宁大连,116031 |
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| 基金项目： | 辽宁省自然科学基金资助项目 ( 981 0 1 0 0 1 0 8) |
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| 摘 要： | 对早实核桃不同生育期主要器官 N、P、K含量测定的结果表明 ,果实中 N、P、K含量不同生育期动态变化规律的曲线呈双峰型。其它器官 (叶片、果枝、营养枝、根 ) N、P、K含量随不同生育期总的呈逐渐下降趋势 ;不同生育期主要器官间 N、P、K分配比例有较大差异 ,N元素分配比例排序 ,5月中旬至 7月初为叶片 >果实 >果枝 >营养枝 ;7月末至 9月初 ,排序为果实 >叶片 >果枝 >营养枝。P元素分配比例各生育阶段变化不大 ,5月中旬至 9月初 ,其分配比例排序为果实 >果枝 >营养枝和叶片。K元素分配比例 ,果实始终高于其它器官 ,果枝、营养枝含 K的比例 ,6月初以前均高于叶片 ,到了 6月中旬以后均低于叶片 ;主要器官内 N、P、K元素间分配比例因器官而异 ,即根、叶片含 N比例均高于其它器官 ,而果实、果枝、营养枝 P、K含量比例均高于叶片和根。
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| 关 键 词： | 早实核桃 生育期 器官 氮 磷 钾含量 变化规律 分配特征 |
| 文章编号： | 1003-8981(2002)02-0063-04 |
| 修稿时间： | 2002年1月30日 |
Characteristics and Pattern of Change in Nitrogen,Phosphorus and Potassium Content in Various Organs of a Precocious Walnut Cultivar at Its Different Growth Stages |
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| GAI Su fen,ZHAO Bao jun,ZHENG Qing tian,LI Dong sheng.Characteristics and Pattern of Change in Nitrogen,Phosphorus and Potassium Content in Various Organs of a Precocious Walnut Cultivar at Its Different Growth Stages[J].Economic Forest Researches,2002,20(2):63-66. |
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| Authors: | GAI Su fen ZHAO Bao jun ZHENG Qing tian LI Dong sheng |
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| Abstract: | Results show that the general trend of N, P, K concentrations in the fruit during the growing season was of double peak curves in shape. In the other organs like the leaf, fruit bearing shoot, vegetative shoot, and root, however, the content of N, P, K at different growing stages was largely characterized by a declining trend. Among these organs the content ration of N, P or K in one organ to the total N, P, or K content in all the tested organs at the different growth stages remarkably varied. With N, the content ration followed a descending order in the organs of leaf, fruit, fruit shoot, and vegetative shoot from mid May to early July, but of fruit, leaf, fruit shoot, and vegetative shoot from late July to early September. With P, only slight changes in the content ration were present regardless of the growth seasons. From mid May to early September the P content ration was descendingly of fruit, fruit shoot, vegetative shoot, and leaf. With K, the highest concentration was unexceptionally found in fruit, and prior to early June, the content ration in the fruit shoot and vegetative shoot was higher than that in the leaf but lower from mid June onward. |
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| Keywords: | Juglans regia L plant organ growth stage nitrogen phosphorus potassium pattern of change nutrient distribution |
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