摘要
[目的]为麦套花生水分管理和高产高效栽培提供依据。[方法]在人工控水条件下,研究麦套花生花针期土壤相对含水量85%、65%、55%、45%处理对不同生育时期光合特性、干物质积累与分配及产量的影响。[结果]在水分处理期间花生叶片净光合速率、气孔导度、蒸腾速率以土壤相对含水量65%处理最高4,5%处理最低,与其他处理差异在0.05水平显著。花针期之后土壤相对含水量均恢复至65%,各个处理的净光合速率迅速恢复,处理间接近。复水后10 d,气孔导度和胞间CO2浓度出现超补偿效应,土壤相对含水量和55%处理无显著差异,土壤相对含水量45%处理在0.05水平显著低于其他处理。[结论]从节水栽培的角度考虑,麦套花生花针期保持土壤相对含水量55%较适宜。
[Objective] The study aimed to supply basis for moisture management and high yield cultivation.[Method] The pot experiment was designed with four different water application treatments,including 85%,65%,55% and 45% of maximum field capacity.The changes of the photosynthetic characteristics,accumulation and distribution of dry matter and the yield in flowering and pegging phase of peanut of different moisture treatment were researched.[Result] Pn and Gs of the treatment of 65% of maximum field capacity were the highest,but the treatment of 45% of maximum field capacity was significantly lower than that of other treatments.Relative moisture reached 65% of all treatments after flowering and pegging phase,and Pn was rapid closed.Gs and Ci appeared super-compensation effect after rewatered 10 days,and the treatments of 45% and 55% of maximum field capacity were significantly higher than the treatment of 85% and 65% of maximum field capacity.The dry matter,yield of kernel of the treatment of 65% and 55% of maximum field capacity had no significant difference,but that of the treatment of 45% of maximum field capacity was significantly lower than that of other treatments.[Conclusion] As viewed from saving water,the optimum soil moisture content for peanut in relay cropping with winter wheat in flowering and pegging phase was the treatment of 55% of maximum field capacity.
出处
《安徽农业科学》
CAS
北大核心
2011年第33期20446-20448,20548,共4页
Journal of Anhui Agricultural Sciences
基金
国家公益性行业科研专项(Nyhyzx07-014)
"十一五"国家科技支撑计划重点项目(2006BAD21B04)
关键词
花生
土壤相对含水量
光合速率
干物质
产量
Peanut
Relative soil moisture
Photosynthetic rate
Dry matter
Yield
