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钻孔深栽造林,就是利用机具或人工在造林地上打孔,深度达到地下水位处,然后将去根苗插入孔内地下水位处,再填土埋实的一种造林方法。该方法主要用于干旱山地造林。造林地应具备:①地下水位最好是1.5m 左右;②沙土、沙壤土、黄沙土及土肥易下渗的黄土区;③土壤含盐量或地下矿化度不应超过0.3%,氯化钠含量不应大于0.1%。造林地采取带状整地。造林时,按规定的株行距确定栽植点,在此点上打孔至地下水位处,然后将去根苗木插入孔中,填土踏实。通常有下列两种密度可供选用:①405株/ha,株行距4m×6m;②330株/ha,株行距5m×6m。造林树种主要是杨树,柳树亦可采用此法。用这种方法造林一般在春秋两季。春季从土壤化冻后到树芽萌动发叶前;秋季从树叶脱落后到土
Drilling deep planting, is the use of machinery or artificial hole in the afforestation, the depth reaches the groundwater level, and then to the root seedlings inserted into the hole at the groundwater level, and then filling the soil embedding a afforestation method. This method is mainly used for afforestation in arid mountains. Afforestation should have: ① the best groundwater level is about 1.5m; ② sandy loam, sandy loam, yellow sand and loess easily infiltration loess area; ③ soil salinity or underground salinity should not exceed 0.3%, chlorination Sodium content should not exceed 0.1%. Afforestation to take strip preparation. Afforestation, according to the provisions of plant spacing to determine the planting point, at this point punch to the groundwater level, and then to the root seedlings into the hole, filling solid. Usually the following two kinds of density are available: ①405 plants / ha, plant spacing 4m × 6m; ③330 plants / ha, plant spacing 5m × 6m. Afforestation trees are mainly poplar, willow can also use this method. Reforestation in this way is usually in spring and autumn. Spring from the soil after the melon to bud sprouting before the leaves; fall from the leaves after falling to the soil