Results 81 to 90 of about 2,260 (144)

Effects of long-term fertilization on yield of wheat and soil fertility in dry-land of Loess Plateau

, 2006
重点分析黄土高原长武试验站长期定位施肥试验地2004年长期施肥对小麦产量、肥料利用率及土壤肥力影响的试验结果,表明:单施磷肥和单施氮肥的产量很低,与对照的产量无明显差异,氮磷钾配施与氮磷配施能显著提高小麦的产量。单施磷肥的磷肥利用率最低,为1%;单施氮肥的氮肥利用率为12.5%;氮磷配施的氮、磷肥利用率均较高,磷肥利用率比单施磷肥提高5.7%,氮肥利用率比单施氮肥提高42.1%。氮磷钾配施较氮磷肥配施的氮肥利用率降低了4.5%,而磷肥利用率升高了2.2%,钾肥的利用率不高,仅为7.3 ...
张少民, 郝明德, 陈磊
core  

[Combined measurement of serum macrophage M1/M2 markers and prediction of early cardiac lesions in obese children]. [PDF]

Zhongguo Dang Dai Er Ke Za Zhi
Xu YP, Liu Y.
europepmc   +1 more source

[Analysis the influencing factors and risk warning of the therapeutic efficacy of multi plane low temperature plasma radiofrequency ablation for OSAHS]. [PDF]

Lin Chuang Er Bi Yan Hou Tou Jing Wai Ke Za Zhi
Liu X, Dong K, Liu M, Li H, Ning B.
europepmc   +1 more source

[Acupuncture alleviates chronic airway inflammation in obese asthmatic mice by downregulating Vnn1 and FAM126B]. [PDF]

Nan Fang Yi Ke Da Xue Xue Bao
Li X, Ye T, Xi L, Li C, Liu H.
europepmc   +1 more source

[Effect of Blood Biochemical Indicators on Exercise Duration in Patients With Stages 3-5 Chronic Kidney Disease: The Mediating Role of Physical Function Status]. [PDF]

Sichuan Da Xue Xue Bao Yi Xue Ban
Yang Y, Chen H, Liu W, Qi X.
europepmc   +1 more source

[Association Between Obesity and the Risk of Obstructive Sleep Apnea Combined With Hypertension]. [PDF]

Sichuan Da Xue Xue Bao Yi Xue Ban
Zhao X, Shu M, Li X, Peng L, Zhang X.
europepmc   +1 more source

全量基肥・接触施肥法による黒ボク土におけるデントコーンの不耕起栽培 [PDF]

, 2007
井上 博道
core   +1 more source

[A follow-up study on total hip arthroplasty in patients with systemic lupus erythematosus combined with osteonecrosis of femoral head]. [PDF]

Beijing Da Xue Xue Bao Yi Xue Ban
Wang X, Guo S, Chen D, Wen X, Hua Y, Zhang L, Zhang Q.   +6 more
europepmc   +1 more source

砒砂岩改良风沙土对铵态氮吸附特性影响研究

, 2015
由于砒砂岩的广泛分布和煤炭资料的开发利用，晋陕蒙接壤区出现了一系列生态环境问题。为恢复区域生 态，尝试利用区域内的砒砂岩来改良风沙土，以实现砒砂岩的资源化利用和受损生态系统的修复，本研究设计了风 沙土中砒砂岩不同添加比例(0、10%、25%、50%、75%、90%、100%)的改良模式。研究了 25℃下不同改良模式对 NH + 4 -N 吸附动力学和等温吸附特征的影响，评价了不同模型对改良土壤的适应性，以期为建立合理的氮肥施用指 标和提高肥料利用率提供依据。结果表明:相同条件下，砒砂岩对 NH + 4 -
摄晓燕, 许晶晶, 马天娥, 魏孝荣, 魏艳春   +4 more
core  

Distribution characteristics and influencing factors of overweight and obesity among urban and rural primary and secondary school students in Hunan Province. [PDF]

Zhong Nan Da Xue Xue Bao Yi Xue Ban
Qin L, Luo M, Li K, Zhou Y, Chen Y, Tan Y, Wang F.   +6 more
europepmc   +1 more source