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冬小麦农学（农情） 知 识 讲 座

冬小麦农学（农情） 知 识 讲 座. 提 纲. 第一节、小麦生长发育规律 第二节、小麦各生育时期的影响因素及农情监测重点. 第一节、 小麦生长发育规律. 一、生育期和生育时期 生育期：小麦 从出苗到成熟所经历的天数。 我国北方广大麦区，由于气候生态条件的差异，小麦生育期也不尽相同。冬小麦大都在 230 天以上。黄淮平原冬麦区的小麦生育期一般为 230-260 天，北方冬麦区为 260-280 天。. 为便于栽培活动，根据器官形成的顺序和便于掌握的明显特征，把小麦的整个生育期分为 11 个生育时期。

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冬小麦农学（农情） 知 识 讲 座

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  1. Chapter 15 Designing Elevations • Height measurements • Found on elevations not on floor plans • Three main horizontal lines • Ground • Eave • Ridge • Overhang • Protects walls and windows from sun and precipitation

  2. Run • Horizontal distance between roof ridge and outside wall • Slope • Ratio of rise over run • Rise • Vertical distance between the top of a wall supporting a roof and the ridge • Fenestration • Arrangement of windows and doors in an elevation

  3. Gable • Outline of a roof that follows triangular end of a building • Hip • Provides eave-line protection around the entire perimeter of the building • Shed • If facing south, suited to use solar panels • Soffit • Underside of a roof overhang

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