| 施钾和补水对旱作马铃薯光合特性及产量的影响 |
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| 引用本文： | 陈光荣,高世铭,张晓艳.施钾和补水对旱作马铃薯光合特性及产量的影响[J].甘肃农业大学学报,2009,44(1). |
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| 作者姓名： | 陈光荣 高世铭 张晓艳 |
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| 作者单位： | 1. 甘肃省农业科学院旱地农业研究所,甘肃,兰州,730070
2. 甘肃农业大学林学院,甘肃,兰州730070 |
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| 基金项目： | 中加合作IPNI资助项目 |
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| 摘 要： | 采用裂区试验设计,以施钾水平为主处理,补水时期为副处理,研究了补充供水和钾素处理对马铃薯光合特性及产量的影响.结果表明:施钾能明显增加马铃薯叶片气孔导度、蒸腾速率及光合速率(P<0.05),但施钾提高叶片气孔导度、蒸腾速率、光合速率的程度还依赖于马铃薯受到土壤水分胁迫的程度.在施钾量150 kg/hm2、苗期补水的条件下,产量达到36 324.97 kg/hm2,比不施钾、不补水处理产量提高了32.24%.
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| 关 键 词： | 马铃薯 施钾量 补水时期 光合特性 产量 |
The effect of potassium application and water supplement period on photosynthetic characteristics and tuber yield of potato in semi-arid area |
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| CHEN Guang-rong,GAO Shi-ming,ZHANG Xiao-yan.The effect of potassium application and water supplement period on photosynthetic characteristics and tuber yield of potato in semi-arid area[J].Journal of Gansu Agricultural University,2009,44(1). |
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| Authors: | CHEN Guang-rong GAO Shi-ming ZHANG Xiao-yan |
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| Institution: | CHEN Guang-rong1,GAO Shi-ming1 ZHANG Xiao-yan2 (1.Institute of Dry Land Agriculture,Gansu Academy of Agricultural Sciences,Lanzhou 730070,China,2.College of Forestry,Gansu Agricultural University,China) |
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| Abstract: | In order to reveal the effect of potassium application and water supplement period on the photosynthetic characteristics of potato leaves and its tuber yield in semi-arid area,a field experiment based on split plot design was carried out in the Tangjiapu Experiment Station of Gansu Academy of Agricultural Sciences(the regional mean annual precipitation is about 430 mm),Dingxi City,Gansu Province.The potassium application(at four levels,0 kg/hm2 as CK,75 kg/hm2,150 kg/hm2 and 225 kg/hm2 of potassium fertiliz... |
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| Keywords: | potato potassium application rate water supplement period photosynthetic characteristics yield |
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