论文部分内容阅读
对3个小黑麦品种在高寒牧区不同生育时期生理指标和生物量进行了测定。结果表明:品种83P-91的综合性状最优,其最大生长速率2.34 cm/d,茎叶比1.2~1.8,分蘖数3.3,单穗重量1.48 g,鲜草产量4 642 g/m2,抽穗期叶片上、中、下部平均光合速率(Pn)9.4 CO2 mg/(dm2.h)、蒸腾速率(Tr)158 H2O mg/(dm2.h)、水分利用率67.3 mg/g、气孔阴抗(SR)2.0 cm/s。综合表明83P-91具有丰产栽培推广价值。
The physiological indexes and biomass of three triticale varieties in different growth stages of alpine pasturing area were determined. The results showed that the comprehensive characters of variety 83P-91 were the best, the maximum growth rate was 2.34 cm / d, the ratio of stem to leaf was 1.2-1.8, the number of tillers was 3.3, the weight of single ear was 1.48 g, the yield of fresh grass was 4 642 g / The average photosynthetic rate (Pn) at the upper, middle and lower leaves was 9.4 CO2 mg / (dm2.h), transpiration rate 158 H2O mg / (dm2.h), water use efficiency 67.3 mg / g, SR ) 2.0 cm / s. Comprehensive shows that 83P-91 with high yield cultivation promotion value.