Results show that the simulated drainage volume from the fieldditch is extremely close to the observed value, and the relative error of annual drainage volume is only 0.4%;
结果表明：模拟的农沟排水量与试验观测值极为接近，年平均排水量误差仅为0.4%；
2
Writing in the journal Entomological Science Dr Ohba describes observing a Kirkaldyia deyrolli eating a Reeve's pond turtle in a ditch next to a rice field.
The scene each kind of inspection well lap and the blind ditch lap in prefabricate in the field to prefabricate, truck transportation, crane loading and unloading, artificial auxiliary.