The primary school is basic stage of compulsory education and key period of forming good study habits, it is the period of laying a foundation of one's growing up too.
小学是义务教育的基础阶段，是一个人形成良好学习习惯的关键时期，也是一个人成长的奠基时期。
Root-extended period is the key period of root growing, moderate deficit irrigation can boost the depth of root;
伸根期是烟草根系生长的关键时期，进行适度的调亏灌溉，可以促进烟草的扎根深度；
There was a sharp rise in assignment procrastination in the junior, indicating junior was a key transforming period of the total growing of undergraduates' academic procrastination;
大学生的作业拖延随年级升高日趋增加，大学二年级是作业拖延迅速增加的转折期；
Key point of the technique is to solve water shortage during winter wheat growing period by collecting water from peak rainfall in summer fallow season and storing it in the soil bank.
这项技术突出的特点是：把解决旱地冬小麦生长期缺水问题的重点放在降雨高峰期，将天然降雨蓄、盖、聚在土壤中，并与冬小麦全生育期地膜覆盖穴播有机的结合起来。
Key point of the technique is to solve water shortage during winter wheat growing period by collecting water from peak rainfall in summer fallow season and storing it in the soil bank.
这项技术突出的特点是：把解决旱地冬小麦生长期缺水问题的重点放在降雨高峰期，将天然降雨蓄、盖、聚在土壤中，并与冬小麦全生育期地膜覆盖穴播有机的结合起来。
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