摘要
以夏玉米为材料,在人工测试坑控制的3个灌水量下,进行气孔导度与光合速度关系的研究:在高中低3个灌水量下各生育期光合速率P。差异最大的为抽雌──吐丝期,而灌浆期差异最小,Pm与气孔导度Cs具有很好的平行关系,同时对不同光照P与Pm、Cs和胞间CO2Ci,进行了分析,探讨了气孔对光合速率的调节机制。
With summer maize as the material, the relationship between stomatalcoilductance and Dhotosvnthetic rate in stimmer maize was studied in artificial measuringpits under the controlled three irrigation water levels, The results indicated that tinderthe three irrigation water levels(high,medium and low) Pn difference in each growth anddevelopment stage was the maximum in the silk advancing stage while Pn difference wasthe minimum in the filling stage. Photosynthetic rate and stomatal conductance werefouiid to be in good parallel relationship;meawhile,the relatioiiship between P and Pn,Csin inner cellular gas and CO2 and Ci was analysed. Also, this paper discusses the stom-atal mechanism to regtilate photosynthetic rate.
出处
《干旱地区农业研究》
CSCD
北大核心
1996年第1期101-105,共5页
Agricultural Research in the Arid Areas
基金
国家自然科学基金
中国科学院"百人计划"项目
关键词
夏玉米
气孔导度
光合速度
节水灌溉
artificial control irrigation
stimmer maize
stomatal conductance
photosynthetic rate
regulating mechanism