【摘 要】
：
1.土质宜酸以呈酸性的北方松毛土、南方的山泥(pH值5.5～6.5)最好,即使用山泥,也可拌进20％的砻糠灰及2％的骨粉,使其疏松、肥沃。
1. Soil acid to acidic northern pine soil,
论文部分内容阅读
1.土质宜酸以呈酸性的北方松毛土、南方的山泥(pH值5.5～6.5)最好,即使用山泥,也可拌进20％的砻糠灰及2％的骨粉,使其疏松、肥沃。
1. Soil acid to acidic northern pine soil, southern mud (pH 5.5 ~ 6.5) is best, even with the use of mud, can also be mixed into 20% of the chaff ash and 2% of the bone meal, so that Its loose, fertile.
其他文献
For the purpose of providing references for further research and practical application about the quality improvement of RCA, in this paper, various treatment me
众所周知,悬崖素材难寻,而山松的悬崖素材就更难得。山松以挺拔为优势,是建筑的良材。悬崖盆景恰是它的劣势取材,相当部份靠天然造化。现就山松树桩悬崖式的出土部份作些实
The epoxy resin (E-51) was used as polymer matrix, conductive carbon black (CB) as conductive filler, and PZT was used to prepare a composite by curing. The eff
成交、预定量上涨成交均价有所抬高阳春三月,春意融融。在这略显暖意的3 月里,杭州八大城区商品房成交量较2月份也增长了不少。据统计,3月份杭州成交商品房为1472套,比2月份
The effects of modifiers on the anti-wetting and anti-icing property of the prepared rough aluminum surface were investigated. The rough aluminum substrates wer
Ribosome-inactivating proteins (RIPs) are toxic N-glycosidases that depurinate the universally conserved α-sarcin loop of large eukaryotic and prokaryotic
Sodium dihydrogen phosphate (NaH2PO4) and potassium dihydrogen phosphate (KH2PO4) were selected as additives for magnesium oxysulfate (MOS) cement. The phase co
提到MP4播放器首先需要说明什么是MP4。MP4是一种视频格式,大名MPEG-4,是视频编码压缩格式MPEG的一种。目前MP4最流行使用的压缩方式为DivX和XviD。经过以DivX或者XviD为代表
Maize rough dwarf disease, is a serious viral disease transmitted by small brown planthoppers (SBPH) (Laodelphax striatellus).In recent years, the disease o
小菊制作盆景应准备如下条件,个人小量制作可酌情简化或代用。 1.较宽敞的场地,较好的阳光,较好的通风; 2.水源以湖水最好,河水次之,井水或自来水最差,但可以贮存数日再用。