The field experiments were conducted from 2017 to 2019 was for explore the effects of wide and narrow rows with full film planting mode on soil moisture and yield of maize in Longzhong dry area,clarify the effects of wide and narrow rows canopy differences during the whole growth period on soil water storage and water consumption,and further reveal the yield increase mechanism of wide and narrow rows with full film double ridges sowing mode.The effects of two wide and narrow row planting methods(35 cm+65 cm,40 cm+60 cm)and equal row spacing planting methods(50 cm+50 cm)on soil water storage,evapotranspiration,yield composition and water use efficiency were studied.The results showed that the water storage capacity of wide-narrow row planted in median water year was higher than that of equal-row planted soil,mainly at 40～80 cm depth,and the water storage capacity of wide-narrow row planted soil was higher at 35 cm+65 cm depth.The water storage capacity of wide-narrow row planted soil fluctuated greatly from the wide-trumpet stage to the maturity stage.The water consumption of wide and narrow rows in each test year was significantly higher than that of the same row spacing from the large trumpet stage to the spinning stage,and the evapotranspiration consumption of 35 cm+65 cm wide and narrow rows was more intense.At the same time,the yield of 40 cm+60 cm and 35 cm+65 cm rows increased by 12.9%and 16.9%,respectively,compared with conventional equal row spacing planting.The WUE of 40 cm+60 cm rows increased by 6.4%～13.2%,and the WUE of 35 cm+65 cm rows increased by 11.1%～21.9%.In general,wide and narrow row planting on whole film double ridges can improve corn yield and water use efficiency in Longzhong dry area,and 35 cm+65 cm wide and narrow row planting has the best performance.
Central Gansurainfedcornwide-narrow rowssoil moisturefull-filmfilm mulching
NETL
NSTL
维普
万方数据
