斜坡和堤岸地方,土壤最易被雨水冲掉,造成水土流失,甚至发生灾害。过去,许多国家的科学工作者认为,在这些地方种植一些结缕草属植物作为植被是见效快,花费省的水土保持方法。但在这些坡地和堤岸大面积播种这种人工植被,不是一件容易的事,因为这些地方不便翻耕。美国曾发明一种液压喷射播种法,将草籽和和化肥加水拌湿后,用液压喷射到坡地上,使草籽粘 On slopes and embankments, the soil is most likely washed away by rain, causing soil erosion and even disasters. In the past, scientists in many countries believed that the cultivation of some Zoysia plants as vegetation in these areas was effective and cost-saving methods of soil and water conservation. However, the sowing of this artificial vegetation over a large area on these slopes and embankments is not an easy task because of the inconvenience of plowing. The United States has invented a hydraulic jet sowing method that wets grass seeds and fertilizers with water, and then sprays hydraulically onto the slopes to make grass seeds stick.