Results 71 to 80 of about 9,778 (179)
Shuitu Baochi Xuebao, 2020 为探究适于晋西黄土区果农间作系统滴灌水肥一体化管理制度，以典型的苹果-大豆间作系统为研究对象，设置灌水和施肥两因素，分析不同水肥调控措施对土壤含水量分布、苹果和大豆光合生理特征、大豆生长和产量以及间作系统水分利用等指标的影响。试验在大豆4个关键需水期进行灌水，肥料随灌溉水施入，每次设置不同灌水上限和施肥水平，4个灌水量上限水平分别为：田间持水量（Fc）的60%（W1），70%（W2），80%（W3）和90%（W4），3个施氮水平：纯N 59.40 kg/hm2（F1），92.00 kg/hm2（F2 ...
李超楠 +5 more
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BT Company Marketing Strategy Research [PDF]
, 2015 改革开放以来，我国社会经济得到了快速发展，医疗水平也得到了提高，我国人民随之对健康意识也与日俱增。作为开展医疗服务的第一步，体外诊断（IVD）已越来越受到国人的重视，需求也越来越旺盛。除了国内各大公立医疗机构中的检验科，实验室诊断中心和体检中心外，各类私立的体检中心也开始攒露头角，一些高端体检套餐也跃跃欲试。这些体检项目小到几百元每人次，高到几万甚至几十万不等，说明了这块蛋糕之市场潜力。作为向这些需求提供解决方案，从事医疗体外诊断产品生产和经营的各类生物科技公司也如雨后春笋般地成立并发展起来 ...
吴朝晖
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Shuitu Baochi Xuebao, 2017 为了明确黄土丘陵区梯田种植类型对0—200 cm有机碳垂直分布的影响，以甘肃庄浪县堡子沟流域玉米、小麦、土豆、苹果和间作（苹果+土豆）5种典型种植类型梯田的土壤为研究对象，分析土壤有机碳含量、储量在0—200 cm的垂直分布特征及影响因素，探讨种植类型对0—200 cm土层有机碳分布稳定性的影响。结果表明：（1）5种种植类型梯田的0—200 cm土层中，有机碳含量平均为3.33~4.86 g/kg，储量平均为8.0~11.69 t/hm2；含量和储量均在间作和苹果地显著高于玉米地、小麦地 ...
赵俊峰 +4 more
doaj
Shuitu Baochi Xuebao, 2020 将苹果枝条的皮层和木材部分开后在450℃下低氧加热制得炭化枝皮和炭化木材，分析其超微结构及对铵态氮和硝态氮的吸附。结果表明，苹果枝皮比其木材部分的纤维素含量高，有更多的微观孔洞和沟壑，炭化后纵向沟壑和孔隙更发达。炭化枝皮对NH4+—N和NO3-—N的饱和吸附量分别为24.11，12.93 mg/g，炭化木材的相应参数分别为22.24，11.99 mg/g，炭化枝皮对NH4+—N和NO3-—N的吸附能力均比炭化木材的更强。两者对NH4+—N的吸附量比对NO3-—N的更大 ...
石钧元 +6 more
doaj
, 2011 MP4 video‘Tsong dbon nor bzang’ was told by Mkha’ ‘gro mthar in A mdo Tibetan. Rta rgyugs, a subdivision of Rka phug Administrative Village, is a farming village located in Khams ra Town, Gcan tsa County Town, Rma lho Tibetan Autonomous Prefecture ...
Rdo rje don 'grub
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, 2011 MP4 video‘A Stupid Young Man’ was told by Mkha’ ‘gro mthar in A mdo Tibetan. Rta rgyugs, a subdivision of Rka phug Administrative Village, is a farming village located in Khams ra Town, Gcan tsa County Town, Rma lho Tibetan Autonomous Prefecture ...
Rdo rje don 'grub
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The Herdsman and Wolf Cubs [PDF]
, 2011 MP4 video‘The Herdsman and Wolf Cubs’ was told by Rgyal mtshan in A mdo Tibetan. Rta rgyugs, a subdivision of Rka phug Administrative Village, is a farming village located in Khams ra Town, Gcan tsa County Town, Rma lho Tibetan Autonomous Prefecture,
Rdo rje don 'grub
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King's Son and Minister's Son [PDF]
, 2011 avi video‘The King’s Son and Minister’s Son’ was told by Rgyal mtshan in A mdo Tibetan. Rta rgyugs, a subdivision of Rka phug Administrative Village, is a farming village located in Khams ra Town, Gcan tsa County Town, Rma lho Tibetan Autonomous ...
Rdo rje don 'grub
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, 2011 MP4 video‘Ghost Queen’ was told by 'phags mo tshe ring in A mdo Tibetan. Rta rgyugs, a subdivision of Rka phug Administrative Village, is a farming village located in Khams ra Town, Gcan tsa County Town, Rma lho Tibetan Autonomous Prefecture, Qinghai ...
Rdo rje don 'grub
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