问:春季造林为啥要强调“宜早不宜迟”?答:因为春季早栽的苗木先生根后发芽,苗木水分蒸发量小,容易成活。因此北方地区提倡“顶凌造林”(也叫“顶浆造林”),即在土壤化冻到刚能栽入苗根深度时就造林。问:播种造林也是宜早不宜迟吗?答:对。早春是较好的播种期,应在土壤化冻后及时地进行播种。特别是干旱的地方,播种更需要早些,这样做是为了幼苗在干热天 Q: why the spring afforestation should emphasize “should sooner rather than later?” A: Because early spring seedlings mulch root germination, seedling moisture evaporation is small, easy to survive. Therefore, the northern region advocates “top-ling afforestation” (also known as “top-hatching afforestation”), ie reforestation occurs when the soil is frozen to the depth of planting seedlings. Q: Is sowing of silviculture not too late? A: Yes. Early spring is a better sowing period, should be sown in time after soil thawing. Especially in arid areas, sowing needs more early, so do seedlings in hot and dry days