摘要
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,具有丰产栽培推广价值.其最大生长速率为2.34 cm/d,茎叶比为1.2~8,分蘖数为3.3,单穗重量1.48 g,鲜草产量4 642 g/m2,抽穗期上、中下部叶片平均光合速率(Pn)为9.4CO2 mg/(dm2@h),蒸腾速率(Tr)158 H2O mg/(dm2@h),水分利用率67.3 mg/g,气孔阻抗(SR)为2.0 cm/s.
The physiological indices and biomass of three triticale cultivars were conducted at different stages in high-cold pastoral area. Results show that cultivar 83P-91 is superior in general and has cultivation value for high yield. Cultivar 83P-91 has the most rapid growth rate of 2.34 cm/d, steam/leaf ratio of 1.2 to 1.8, tillers of 3.3, ear weight of 1.48g, fresh yield of 4 642 g/m. The average photosynthesis rate, transpiration rate, water utilization efficient and stomatic resistance of high, middle and low part of leaves are 9.4 CO2 mg/(dm2·h),158H2O mg/(dm2·h),67.3 mg/g and 2.0 cm/s, respectively.
出处
《甘肃农业大学学报》
CAS
CSCD
2002年第4期428-432,共5页
Journal of Gansu Agricultural University
