渗灌和地膜覆盖对冬小麦产量及绿色面积构成的影响

为寻求小麦节水栽培的有效调控技术和相应效果,研究了灌水方式与地膜覆盖的不同组合,对冬小麦产量及其构成、穗茎叶等器官绿色面积的影响.结果表明:渗灌和覆膜均可不同程度提高产量,且两个因素相组合效果更显著;20cm和40cm渗灌加覆膜在总耗水量459mm的控制条件下,分别比对照增产20.16%和20.34%;而在有深层水补给的露天条件下,分别增产13.67%和11.11%.不同处理对穗、茎和叶器官绿色面积及其比例也产生显著影响;在不同栽培条件下,开花期非叶绿色光合器官占总绿色面积的比例在60.84%-64.53%之间.

Effects of Irrigation Methods and Film Mulching on Yield and Green Area of Winter Wheat

In order to explore the technology and the corresponding effects of wheat water-saving cultivation, the impacts of irrigation method and film-mulching combination on yield and components, green area of stem, leaf, and spike were studied. The results indicated that both infiltration irrigation and film-mulching could raise yields, although their combination has more remarkable effect. Under controlling 459mm total water consumption condition, the 20cm and 40cm on infiltration irrigation and film-mulching increase the production by 20.34% and 20.16% than CK, and increase by11.11% and 13.67% with open-air and recharging deep water. Different treatments have remarkable effect on green area of stem, leaf and spike and their proportion. With different cultivation, non-leaf photosynthetic organs occupy proportion of total green area between 61.33%~62.69% in the flowering stage.