华北丘陵山地桃园由于坡陡、土薄，距水源远，虽每年进行1～2次人工灌水，但由于旱情严重，加之土壤保墒能力差，仍满足不了树体生长发育的需要。采用树下覆膜，可收到较好的效果。一般于4月下旬浇完花后水时覆膜，覆膜前果园先进行中耕松土，并喷洒除草剂乙草胺。覆膜处理后， Due to the steep slope, thin soil and far away from the water source, the peach orchards in the hilly and mountainous regions of North China have 1 or 2 artificial irrigations per year. However, due to the severe drought and poor soil moisture retention, the Taoyuan still can not meet the needs of tree growth and development. Under the tree cover, you can receive better results. Usually after the end of April after the water flowering flowers, orchard before the first cultivation of loose soil, and spraying herbicide acetochlor. After coating treatment,