小麦高产优质低耗栽培途径生理基础研究—光合特性

Studies on the Physiological Basis of the Way of Planting of High Yield,Top Quality at Low Expenditure of Wheat——Photosynthetic Characteristics

采用“高肥宽行稀播”高产优质低耗栽培技术,小麦生育后期群体发展合理,中、下部光照充足,叶绿素含量提高,光合速率和灌浆速率加快,具有良好的光合特性。在维特较小的叶面积系数的基础上,改善光合性能,提高光合能力,是进一步提高小麦产量的一个关键。

In the later stage, the ideal development of colony, the adequate illumi-nation of the middle and lower parts of the colony, the increase of chlorophyll content, photosynthetic rate, grain filling rate and dry matter accumulation on the condition of“higher fertility, wider distance between the rows and sparser seeds”lead to a good economic yield. Increasing photosynthetic rate on the condition of maintaining less LAI is one of the keys of increasing the yield of wheat.