论文部分内容阅读
以汕优63为材料,进行各叶位的叶面积对叶效率的影响和5项栽培措施与叶面积大小的关系研究。结果表明:各叶位的叶面积均与其叶效率呈显著或极显著负相关;倒4及以下叶对穗部灌浆结实的作用程度与基部光强度呈极显著正相关,本田采取适当密植、减少施氮量、氮肥重底结合施穗粒肥、等行距栽培等途径,可显著减小上部3片叶面积,提高叶效率和倒4及以下叶片的灌浆结实作用而获高产。
Using Shanyou 63 as material, the effects of leaf area on leaf efficiency and the relationship between five cultivation measures and leaf area were studied. The results showed that the leaf area of each leaf position was significantly or very significantly negatively correlated with its leaf efficiency. The degree of grain filling and fruiting of the 4 and below leaves had a significant positive correlation with the light intensity at the base. Honda adopted appropriate close planting to reduce Nitrogen application, combined application of nitrogenous fertilizer at the end of grain and spikelet fertilizer, etc., could significantly reduce the upper three leaf area, improve leaf efficiency and the effect of grain filling and solidification of fallen leaves 4 and below.