小麦返青拔节阶段是小麦从以营养生长为主转向以生殖生长为主的重要时期,是决定小麦单位面积穗数和穗粒数的关键时期,是调控小麦群体的最后时期,是防治小麦纹枯病的最后一道关口。所以,加强小麦返青拔节期的技术管理,对小麦高产丰收奠定基础,挖掘小麦增产潜力具有重要意义。 Wheat regreening phase is the wheat from vegetative growth to reproductive growth-oriented important period is to determine the number of spikes per unit area of ​​wheat and grain-number critical period is the last regulation of wheat populations is the prevention and treatment of wheat withered The last sign of illness. Therefore, to strengthen the technical management of wheat regreening and jointing stage, to lay a foundation for high-yield wheat harvest and tap the potential of wheat yield is of great significance.