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- Comparison of crop water requirements computed by single crop coefficient approach and dual crop coefficient approach 单作物系数法和双作物系数法计算作物需水量的比较研究
- dual crop coefficient 双作物系数
- Many kinds of approaches have been used for estimating crop evapotranspiration,here,we use crop coefficient approach recommended by FAO. 估算作物腾发速率的方法很多,本研究采用了联合国粮农组织推荐的作物系数法。
- With FAO irrigation and drainage series books 56th part Penman-Monteith formula, computation program of ET0 had been developed about day and month as time unit, and ET value would be known while giving crop coefficient Kc. 运用FAO灌溉排水丛书第56 分册提供的Penman-Monteith公式,编制了以日和月为时间单位的计算ET0 程序,通过调用Kc参数表,可计算出ET;
- The crop coefficients from FAO-56 were amended by weather parameters. 对FAO-56推荐作物系数在数值和生育阶段进行了双重修正：采用气象数据对FAO-56推荐作物系数进行数值修正。
- The crop coefficients (Kc) of winter wheat were obtained, based on the measured ETc by TDR in the field and calculated reference crop evapotranspiration (ETo) with meteorological data. 根据冬小麦生育期内实测的ETc以及用气象资料计算的参考作物蒸散量（ETo），求得了冬小麦的作物系数（Kc）。
- Rice is the chief crop in most southern provinces. 稻子是大多数南方省份的主要作物。
- The crop coefficients(K_c)are 0.30, 0.40, 0.90 and 0.88 in NGP, IGP, MGP and EGP, respectively. The actual evapotranspiration is determined to be 962.0 mm in a whole year and 2.63 mmd~-1 of a daily mean. 确定了牧草非生长期、生长初期、生长中期、生长末期的Kc分别为0.;30、0
- The road opened out into a dual carriageway. 这条路已扩展成了复式车行道。
- The grain crop has gone down this year. 今年的粮食作物产量下降了。
- We have had the biggest wheat crop ever this year. 今年我们的小麦收获量是有史以来最好的。
- Half the fruit crop froze out in the sudden cold. 一半的水果作物在突如其来的寒流中被冻死。
- Rice is the chief crop in this ares. 稻子是这一地区的主要作物。
- We had a poor crop of raspberries this year. 今年我们的悬钩子歉收。
- The farmer paid 3 laborers to gather the crop. 农场主雇佣3名工人收割庄稼。
- Part of every crop is saved for seed. 每一种庄稼都留一部分作种子。
- His shot beat the goalkeeper neck and crop. 守门员根本挡不住他射门。
- He fell neck and crop off the horse. 他从马上倒栽葱地摔了下来。
- His dual role as a composer and a conductor made him very busy. 他作曲家和指挥家的双重身份使他非常繁忙。
- The farmer paid 3 labourers to gather the crop. 农场主雇佣3名工人收割庄稼。
