负压差灌溉 将多孔的管道埋入地下,依靠管中水与周围土壤产生的负压差进行自动灌溉。其整个系统能根据管子四周土壤的干湿状态自动调节水量,使土壤保持作物生长的最适宜状态。这一技术是日本科学家发明的。 涌波灌溉 由美国和加拿大的科学家共同推出。采用加大水流量的办 Negative pressure irrigation will be buried in the porous pipe underground, relying on water pipe and the soil around the negative pressure difference generated by automatic irrigation. The entire system can automatically adjust the amount of water according to the dry and wet conditions of the soil around the pipe, so that the soil to maintain the most appropriate state of crop growth. This technique was invented by Japanese scientists. Surge water irrigation was jointly launched by scientists from the United States and Canada. Use to increase water flow office