而在寒冷潮湿多雨冻原、高山草甸类草场，热量条件是影响牧草返青期的主要因子。
The time of turning yellow related to heat condition both the Cold temperate perhumid cold conifer forest and the Frigid perhumid rain tundra alpine meadow.
通过田间试验研究了返青期不同程度根修剪处理对冬小麦群体结构、土壤水分及产量形成的影响。
A field experiment was conducted to study effects of root pruning at returning green stage on population structure, soil water and yield formation of winter wheat.
叶面积比率的生物学特征最为明显，冬小麦返青到拔节期间的叶面积比率最大，拔节之后，叶面积比率逐渐下降，在冬小麦乳熟期前后达到最小。
The most distinctive biological feature is the Leaf Area Ratio(LAR), it is higher in former phase and lower in later, and decline to its smallest around the period of Milky Ripeness.
结果表明，刈剪和火烧分别使结缕草草坪提前返青44天和28天，秋季施肥可延长绿期13天。
The results show that mowing and burning can respectively advance the date of returning green stage for 44 and 28 days, and fertilizing in autumn can prolong the green stage for 13 days.
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；
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.
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