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以油用牡丹品种‘凤丹’为试验材料,采用完全随机区组设计,研究9种不同株行距对植株生长发育、光合特性、水分利用效率及产量构成因素的影响,为优化油用牡丹栽培技术提供理论依据。结果表明:增大株行距有利于提高平均冠幅、分枝量、新枝基径和单株叶面积(LA),降低株高和新枝长度,对净光合速率(Pn)、蒸腾速率(Tr)、气孔导度(Gs)、叶绿素含量(Chl)有明显促进作用,并提高水分利用效率(WUE)。1.0m行距各配置植株个体生长发育最好,单株结实量最高。0.6m行距各配置株高及单株叶面积最大,植株表现出一定程度的徒长,光合生理指标和产量最低。产量受到单株结实量和种植株数的共同影响,以0.5m×0.8m株行距配置的产量最高,为1211.11kg/hm~2。
Taking the peony variety ’Fengdan’ as the experimental material, we studied the effects of 9 different strains on plant growth and development, photosynthetic characteristics, water use efficiency and yield components by using a completely randomized block design. Technology provides a theoretical basis. The results showed that increasing the row spacing could improve the average crown width, branch number, shoot diameter and LA per plant, decrease the plant height and shoot length, and had significant influence on net photosynthetic rate (Pn), transpiration rate (Tr) , Stomatal conductance (Gs) and chlorophyll content (Chl), and increased water use efficiency (WUE). 1.0m row configuration of the individual plant growth and development of the best, the highest per plant. 0.6m row spacing of each plant height and leaf area per plant maximum, the plant showed a certain degree of leggy, photosynthetic physiological indicators and yield the lowest. The yield was affected by the combined effect of seed setting and plant number per plant, with the highest yield of 1211.11kg / hm ~ 2 with the row spacing of 0.5m × 0.8m.