Results 101 to 110 of about 1,841 (145)

Nitrogen effect and leaching under nitrogen-application or plastic film mulching planting in wheat cropland of dryland

, 2003
在陕西长武旱塬进行的试验表明,小麦施用氮肥增产显著。在小麦生育前期持续干旱条件下,地膜覆盖并没有使小麦表现出较好的增产效果。施用氮肥或氮肥与有机肥配施都可能引起NO-3向深层淋溶,而且氮肥用量越大,淋溶量及深度愈大;施用有机肥NO-3累积现象减弱。小麦对硝态氮主要吸收深度范围为0～80cm;不同施肥处理对土壤剖面NH+4的影响不大。施用氮肥会明显增加小麦吸氮量,但氮肥利用率随其用量增加而降低。试验条件下,低(施氮量为100kg/hm2)、高(施氮量为150kg/hm2 ...
党廷辉, 蔡贵信, 郝明德, 郭胜利   +3 more
core  

[Development of a machine learning-based ionization efficiency prediction model for per- and polyfluoroalkyl substances and its application in semi-quantitative analysis]. [PDF]

Se Pu
Sun SZ, Li YY, Gao Y, Li KC, Chen Z, Li XQ, Zhang QH.   +6 more
europepmc   +1 more source

优质菜栽培与加工技术研究 [PDF]

, 1998
叶志伟, 郑忠辉, 陈艺生, 黄耀坚   +3 more
core  

[Teaching practice of undergraduate graduation projects in clinical laboratory science integrating liquid chromatography-tandem mass spectrometry and external quality assessment]. [PDF]

Se Pu
Shi J, Wang M, Xue QZ, Zhang SL, Hu YW.
europepmc   +1 more source

[Assessment on data processing methods for nontarget identification of per- and polyfluoroalkyl substances using liquid chromatography-high-resolution mass spectrometry]. [PDF]

Se Pu
Zhang BX, He QW, Han BC, Ma CD, Luo ZJ, Meng XZ.   +5 more
europepmc   +1 more source

[Determination of eight ultraviolet absorbers in surface water and wastewater by ultra performance liquid chromatography-triple quadrupole mass spectrometry]. [PDF]

Se Pu
Sun HJ, Zhang BB, Huang MQ, Wang H, Hu GJ, Chen HM.   +5 more
europepmc   +1 more source

[Analysis of the misdiagnosis causes and treatment strategies for burns combined with alcohol withdrawal syndrome]. [PDF]

Zhonghua Shao Shang Yu Chuang Mian Xiu Fu Za Zhi
Shang XZ, Ding MX, Lin GA, Wang C, Lin ZC, Hu DS, Li S, Meng JS, Xiao R.   +8 more
europepmc   +1 more source

[Application and research progress of metal-organic framework materials in skin repair]. [PDF]

Sheng Wu Yi Xue Gong Cheng Xue Za Zhi
Ma S, Wu W, Liu H, Liu M, Xing F.
europepmc   +1 more source

[The role and mechanism of chemokine network in promoting osteoarthritis progression by regulating synovial macrophage heterogeneity]. [PDF]

Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi
Lin Y, Wu L, Chen Q, Shen B.
europepmc   +1 more source

[Efficacy and safety of super electroconvulsive therapy for treatment-resistant depression: a retrospective analysis of 292 cases]. [PDF]

Nan Fang Yi Ke Da Xue Xue Bao
An J, Chi Z, Zhao C, Li Y, Wang R, Hu Y.
europepmc   +1 more source