【摘要】 通过不同施N量对高产旱稻生长发育及产量的影响表明:随施氮量的增加,旱稻不同器官或组织间氮素营养的分配导致分蘖数、穗数、成穗率、株高、穗长增加、根冠比增强,根系及地上部干物质积累量增加,其中成穗率以中氮处理最高。随施N量的增加,旱稻的灌浆速率高N、中N、低N均较对照有显著增加,且高N处理的灌浆高峰较其它处理显提前,说明施N量增加有利于旱稻高产。更多还原

【Abstract】 The effects of different nitrogen on growth and development and yield in high-yield dry land rice had been studied,the results showed: with the increasing of nitrogen application,tiller No.,panicle No.,plant height,panicle length,the rate of root and shoot,the dry matter of root and shoot and the filling rate increased,but the panicle-setting rate of middle nitrogen is the best one in 4 treatment.From all of these,we know that increasing the nitrogen application will get high yield in dry land rice.更多还原