常見例句雙語例句Subsurface drain pipe system is a practical and effective solution to the improvement of submerged land and saline land.暗管排水是改良低濕地和治理鹽堿土有效的工程措施。Rice controlling irrigation techniques in NingXia are studied and the model of controlling irrigation on saline land is defined in this paper.本論文主要對寧夏鹽堿耕地水稻控制灌溉技術(shù)進行了研究，確定鹽堿耕地控制灌溉模式。Finally, the best scheme of rice on saline land is fixed by using dynamic programming model, and the results are more reasonable compared to real experiment data.最后，用動態(tài)規(guī)劃的數(shù)學模型來確定鹽堿耕地水稻最優(yōu)灌溉制度，并與實際試驗結(jié)果相比較，結(jié)果更加合理。 返回 saline land