Worse, much abstracted water is used in inefficient irrigation; compounding that, underpricing means it is often used for watering low-value crops.
更严重的是，很多抽取的地下水并没有实现高效灌溉；地下水的抑价说明其经常被用来灌溉低价值作物。
2
And while concentrated heat on top of city buildings can help tomatoes ripen, it also means more frequent watering, even if irrigation requires lugging watering cans up stairs.
However, should still be small water frequently watering, not flood irrigation time, generally every 4 to 5 days after watering 1 times, cooler weather, basically 1 times a week.