They constructed a sophisticated irrigation system that allowed them to grow wheat, barley, sorghum, date palms, and olives.
他们建造了非常复杂精密的灌溉系统，这让他们得以种植小麦、大麦、高梁、椰枣和橄榄。
2
Disease incidence related closely with not only varieties and meterological condition, but cultivation practices such as irrigation, sowing date, sowing density, sowing method and so on.
发病程度除与品种、气象条件有关外，还与灌水，播种时期，密度，播种方法等栽培措施关系密切。
3
The error between field test and forecast is satisfied. So this model can provide a practical and convenient way for forecasting irrigation quantity and date.