贡河灌区规划设计书.doc

《贡河灌区规划设计书.doc》由会员上传分享，免费在线阅读，更多相关内容在学术论文-天天文库。

1、第一章灌区规划开发概况以及必要性与可行性分析第二章作物灌溉制度和灌水率图设计1.灌溉设计标准灌溉设计保证率采用85%，经频率计算分析，相应的设计代表年为1971年。2.逐日耗水量计算表表2.1水稻耗水量计算表Table2.1Thewaterconsumptioncalculationtableofpaddy生育期返青分蘖孕穗抽穗乳熟黄熟全生育期起止日期早稻25/4-4/55/5-1/62/6-16/617/6-26/627/6-6/77/7-14/725/4-14/7晚稻3/8-10/811/8-2/93/9

2、-22/923/9-2/103/10-13/1014/10-23/103/8-23/10天数早稻1028151010881晚稻8232010111082需水模比系数(%)早稻7242422149100晚稻626272597100田间渗漏量(mm/d)早稻1.51.51.51.51.51.51.5晚稻1.51.51.51.51.51.51.5水面蒸发量E0(mm)早稻32.6102.848.431.158.437310.3晚稻56.1158.358.828.42821.7351.3阶段需水系数α早稻0.000.

3、000.000.000.000.001.2晚稻0.180.520.190.090.090.071.15阶段需水量(mm)早稻26.0789.3789.3781.9252.1333.51372.36晚稻24.24105.04109.0810136.3628.28404阶段渗漏量(mm)早稻154222.5151512121.5晚稻1234.5301516.515123阶段耗水量(mm)早稻41.07131.37111.8796.9267.1345.51493.86晚稻36.24139.54139.08116.0

4、052.8643.28527.00逐日耗水量(mm)早稻4.114.697.469.696.715.696.10晚稻4.536.076.9511.604.814.336.433.早稻生育期灌溉制度计算表表2.2早稻生育期灌溉制度计算表Table2.2Thecalculationtableofirrigationschemeofearlyriceduringthegrowthperiod早稻全生育期田间水层变化H末=H始+P+I-WC-DH始=20mm日期生育期42田间适宜水层深(mm)逐日耗水量(mm)逐日降

5、雨量(mm)田间水层变化（mm)灌水量(mm)排水量(mm)月日42420.0续表2.2早稻生育期灌溉制度计算表ContinuedTable2.2Thecalculationtableofirrigationschemeofearlyriceduringthegrowthperiod日期生育期田间适宜水层深(mm)逐日耗水量(mm)逐日降雨量(mm)田间水层变化（mm)灌水量(mm)排水量(mm)月日25262728返青期10-30-504.121.40.20.317.313.429.625.52029　21

6、.430　17.3510.613.8223.733.43　29.34　25.25分蘖10-40-604.711.522.06　17.37　12.6833.441.39　36.610　31.911　27.212　22.513　17.814　13.1150.839.230167.942.4171552.7186.354.319　49.620　44.921　40.222　35.52340.36011.124　55.3256.156.7264.456.4272816.8608.555.34229　050.630　-4

7、.731　-9.461-14.1续表2.2早稻生育期灌溉制度计算表ContinuedTable2.2Thecalculationtableofirrigationschemeofearlyriceduringthegrowthperiod日期生育期田间适宜水层深(mm)逐日耗水量(mm)逐日降雨量(mm)田间水层变化（mm)灌水量(mm)排水量(mm)月日234567孕穗20-50-807.520.234.43.438.430.943.675.270.563.460`80.258.9951.61044.111

8、36.6126.229.11327.81420.31542.8301635.317抽穗20-50-809.748.1301838.41956804.702057.18047.4210.270.5221.562.32352.62442.92533.2261.625.127乳熟10-40-606.7　18.4　　28　11.7　　29　35.030　30　28.3　　71　21.6　　23.918.8