王勇,高育锋,樊廷录.旱地周年覆膜条件下冬小麦的光合特性[J].麦类作物学报,2005,25(6):100 |
旱地周年覆膜条件下冬小麦的光合特性 |
Studies on Photosynthetic Characteristics of Winter Wheat with Plastic Film Mulching in a Whole Year in Dryland |
修订日期:2005-06-23 |
DOI:10.7606/j.issn.1009-1041.2005.06.255 |
中文关键词: 冬小麦,周年覆膜,光合速率,叶片水分利用效率 |
英文关键词:Winter wheat,Summer mulching in a whole year,Photosynthetic rate,WUE of leaf |
基金项目:国家“十五”区域持续高效农业课题(2001BA508B11),国家“863”节水专项课题(2002AA2Z4011) |
王勇 高育锋 樊廷录 |
甘肃省农科院旱地农业研究所 甘肃兰州730070
(王勇,高育锋) ,甘肃省农科院旱地农业研究所 甘肃兰州730070(樊廷录)
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中文摘要: |
在周年覆膜条件下,以陇鉴339为材料,研究了周年地膜覆盖后冬小麦的光合速率(P n)变化,以了解周年覆膜对冬小麦光合作用的影响。结果表明,周年覆膜秋播冬小麦较露地冬小麦光合速率、叶片水分利用效率显著提高。冬小麦旗叶P n日变化呈现“单峰型”,覆膜的高峰值较露地增加3.917μm olCO2.m-2.-s 1,提高17.74%,且持续时间延长,整个P n日变化中覆膜较露地平均提高11.62%。各生育阶段覆膜冬小麦的P n始终维持在较高水平上。增施氮肥、提高氮磷比有利于提高冬小麦P n。 |
英文摘要: |
Photosynthetic characteristics of the winter wheat were studied under plastic film mulch in a whole year(fallow and growing period).It showed that photosynthetic rate(Pn) and Instantaneous water use efficiency(WUE) of leaf of winter wheat increased in the |
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