摘要
为研究覆膜处理与行距对谷子光合特性和产量的影响,以晋谷21 号为试材,设置 3 种覆盖方式(A1:全覆膜;A2:膜际;A3:不覆膜)与 2 种行距水平(等行距 50 cm、宽窄行 60/40 cm)互作栽培,以不覆膜为对照,共设置 A1B1(T1)、A1B2(T2)、A2B1(T3)、A2B2-1(T4)、A2B2-2(T5)、A3B1(CK1)和A3B2(CK2)7 个处理.结果表明,与对照相比,两种覆膜方式均能提高谷子光合能力和产量.其中,A2B1(T3)处理净光合速率、气孔导度和胞间CO2 浓度均最高,分别为 23.38 μmol·m-2·s-1、0.17 mol H2O·m-2·s-1,和 133.07 μmol·mol-1,A1B2(T2)处理蒸腾速率最低,为 2.82 mmol·m-2·s-1,较A3B2(CK2)降低了19.20%.A2B1(T3)处理单穗重和产量均最高,分别为29.25 g和5 793.25 kg/hm2,显著高于其他处理.综上所述,A2B1(T3)处理,可显著增强谷子光合作用,提高产量,获得较高的经济效益,可作为一项重要的栽培措施在榆林地区谷子生产上运用.
Abstract
In order to study the effects of mulching treatments and row spacing on the photosynthetic characteristics and yield of Setariai talica,three types of mulching methods(A1:full mulching;A2:inter-membrane;A3:no mulching)were set up to intercropping cultivation with two levels of row spacing(equal spacing 50 cm,wide and narrow rows 60140 cm),and no mulching was taken as the control,with a total of 7 treatments set up,including A1B1(T1),A1B2(T2),A2B1(T3),A2B2-1(T4),A2B2-2(T5),A3B1(CK1),and A3B2(CK2),using the Jin Grain No.21 as the test material.The results showed that both mulching methods could improve the photo-synthetic capacity and yield of S.talica compared with the control.Among them,A2B1(T3)treatment had the high-est net photosynthetic rate,stomatal conductance and intercellular CO2 concentration,which were 23.38 μmol·m-2·s-1,0.17 mol H2O·m2·s,and 133.07 μmol·mol-1,respectively,and A1B2(T2)treatment had the lowest transpiration rate,which was 2.82 mmol·m-2·s-1,and was higher than A3B2(CK2)by 19.20％.The A2B1(T3)treatment had the highest single spike weight and yield,29.25 g and 5 793.25 kg/hm2,respectively,which were significantly higher than the other treatments.In summary,A2B1(T3)treatment,which can signifi-cantly enhance S.talica photosynthesis,improve yield,and obtain higher economic benefits,can be used as an im-portant cultivation measure in grain production in Yulin.
基金项目
陕西省农业农村厅科技创新驱动项目(2022NYT01)
榆林市科技局产学研计划(CXY-2023-164)
榆林市科技局产学研计划(CXY2022-69)
榆林市科技局产学研计划(CXY-2022-70)
NETL
NSTL
万方数据