The drought stress from jointing to heading stage decreased nitrogen nutrition efficiency of winter wheat significantly.
拔节至抽穗期干旱胁迫极显著地降低冬小麦的氮素营养效率。
P-V technique was used to test the mode of turgor maintenance of wheat leaf at seedling, jointing and earing stages.
用P - V技术研究了冬小麦苗期、拔节期和孕穗期功能叶膨压维持方式。
The relationship between the soil water content from the jointing of wheat to the heading and Numbers of grains of every ear of wheat is the closest in the dry farming regions of the Loess Plateau.
在黄土高原旱作区，小麦拔节至抽穗期土壤贮水量与穗粒数，灌浆至乳熟期土壤贮水量与穗粒重的关系最为密切。
Therefore, the mild water stress can be allowed in the jointing stage of winter wheat, and grain-filling stage should try to avoid any degree of water stress.
因此，冬小麦拔节期允许轻度的水分胁迫，而灌浆期则应尽量避免任何程度的水分胁迫。
The results showed that the growing stage from reviving to maturity stage of winter wheat became earlier and the postponed tendency of the jointing stage was the most obvious.
结果表明：河南省冬小麦自返青到成熟的各生育期均表现出提前的趋势，其中以拔节期提前最明显；
The results showed that the growing stage from reviving to maturity stage of winter wheat became earlier and the postponed tendency of the jointing stage was the most obvious.
结果表明：河南省冬小麦自返青到成熟的各生育期均表现出提前的趋势，其中以拔节期提前最明显；
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