干旱区生态环境知识资源中心(Arid): 施钾和补水对旱作马铃薯光合特性及产量的影响

Arid

	施钾和补水对旱作马铃薯光合特性及产量的影响
其他题名	The effect of potassium application and water supplement period on photosynthetic characteristics and tuber yield of potato in semi-arid area
	陈光荣 1; 高世铭 1; 张晓艳 2
ISSN	1003-4315
出版年	2009
卷号	44 期号:1 页码:74-78
中文摘要	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/hm~2、苗期补水的条件下,产量达到36 324.97 kg/hm~2.比不施钾、不补水处理产量提高了32.24%.
英文摘要	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/hm~2 as CK, 75 kg/hm~2, 150 kg/hm~2 and 225 kg/hm~2 of potassium fertilizer, respectively) was set up as the main treatment factor, and the water supplement period was chosen as the accessory treatment factor (divided into three patterns of no water supplement as CK, 90 m~3/hm~2 of water supplement in seedling stage and flowering stage, respectively). The results showed that the stomatal conductance, transpiration rate and photosynthetic rate of potato leaves were increased at significant levels(P＜0.05)by applying potassium fertilizer in proper amount. However, the effect degree of potassium application on three physiological indexes also depended on the strength of soil water stress. On the condition of potassium application rate controlled to 150 kg/hm~2 with water supplement in the seedling stage, the tuber yield of potato reached 36 324.97 kg/hm~2 and increased by 32.24% compared with CK.
中文关键词	马铃薯 ; 施钾量 ; 补水时期 ; 光合特性 ; 产量
英文关键词	potato potassium application rate water supplement period photosynthetic characteristics yield
语种	中文
国家	中国
收录类别	CSCD
WOS类目	AGRONOMY
WOS研究方向	Agriculture
CSCD记录号	CSCD:3560313
来源机构	甘肃农业大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/223496
作者单位	1.甘肃省农业科学院旱地农业研究所, 兰州, 甘肃 730070, 中国; 2.甘肃农业大学林学院, 兰州, 甘肃 730070, 中国
推荐引用方式 GB/T 7714	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,2009,44(1):74-78.
APA	陈光荣,高世铭,&张晓艳.(2009).施钾和补水对旱作马铃薯光合特性及产量的影响.,44(1),74-78.
MLA	陈光荣,et al."施钾和补水对旱作马铃薯光合特性及产量的影响".44.1(2009):74-78.