充分与非充分灌溉条件下冬小麦光合速率与产量的关系

The Correlativity between Photosynthetic Rate and Yield of Winter Wheat under Full-Irrigation and Insufficiency Irrigation

选用北方栽培的10个冬小麦品种,设定充分灌溉和非充分灌溉(自然降水)两种水分条件,旨在分析光合速率与产量的关系。结果表明:充分灌溉条件下冬小麦的光合速率和产量均高于非充分灌溉;在生殖生长期光合速率与产量具有显著的正相关关系,自然光下光合速率在抽穗开花期和灌浆初期与产量的相关性最显著,给光下光合速率在抽穗开花期、灌浆初期、灌浆中期与产量的相关性最显著。因此,在抽穗开花期和灌浆期适当增加灌溉量,可提高光合速率,促使小麦增产。

Ten species of winter wheat which grown in Northern China were selected in this study,they were treated by two water conditions: Full-Irrigation and Insufficiency-Irrigation(Rainfall).Tthen we analyzed the correlation between the photosynthetic rate and the yield.The result showed that under Full Irrigated condition,both the photosynthetic rate and the yield were higher than that under insufficiency irrigation's.The positive correlativity between the photosynthetic rate and the yield was remarkable during the procreate growth period.During the heading-blooming and the beginning of grain-filling stage,the correlation between the photosynthetic rate(Natural light) and the yield was the most remarkable.For the photosynthetic rate(LED),the most remarkable correlation was during the stage of heading-blooming,the beginning grain-filling and the mid-grain-filling.Therefore,more irrigation during heading-blooming and grouting stage could enhance the photosynthetic rate and increase the yield of winter wheat.