近年来,滦平县于营子、虎什哈、巴克什营等场圃,采用油松栽“顶浆靠山苗”的技术措施,取得显著效果。1973年春,巴克什营苗圃栽植油松311亩,成活率达86％;1975年春,火斗山公社小营大队栽植油松200亩,成活率达80％;1977年春,虎什哈林场也采用此法栽松936亩,成活率达81.4％。1964—1965年在于营子林场对1960、1962、1964年采用“顶浆 In recent years, Luanping County, Yingzi, Hushih, Camp Bark camp and other nurseries, the use of oil planting “top pulp backing Miao” technical measures and achieved remarkable results. In the spring of 1973, 311 hectares of Pinus tabulaeformis were planted in the Bakkeshuni nursery and the survival rate was 86%. In the spring of 1975, the small battalion of the Huodosan Mountain Commune was planted with 200 mu of Pinus tabulaeformis, with a survival rate of 80%. In the spring of 1977, France planted 936 acres, the survival rate of 81.4%. From 1964 to 1965, Yingzi Forest Farm used “top-pulp” for 1960, 1962 and 1964