Results 71 to 80 of about 23,729 (123)

施氮量对双季稻产量及氮磷钾吸收利用的影响

Shuitu Baochi Xuebao, 2019
研究不同施氮量对双季稻产量、氮磷钾积累量及氮磷钾利用率的影响，同时探讨双季稻吸收利用氮、磷、钾素三者间的相互关系。通过田间试验研究施氮量不同、磷钾投入量相同条件下的双季稻产量、双季稻氮、磷、钾积累量、双季稻氮、磷、钾素利用效率及磷钾吸收利用与氮吸收利用的关系。结果表明：双季稻产量在一定范围内（早稻0~105 kg/hm2，晚稻0~146 kg/hm2）随施氮量的增加而提高，之后产量随施氮量增加而降低。本试验施氮条件下，早稻产量最高的处理为75%N （105 kg/hm2），比CK （不施化肥）增产58 ...
朱启东, 鲁艳红, 廖育林, 聂军, 周兴, 聂鑫, 程会丹   +6 more
doaj  

径流冲刷条件下冻融坡面产沙时空分布

Shuitu Baochi Xuebao, 2017
为确定冲刷条件下冻融坡面侵蚀产沙时空分布特征，利用稀土元素(REE)示踪技术，采用2个坡度（10°，15°），4个初始解冻深度（2，5，10，15 cm），4个流量（4.5，6.5，8.5，10.5 L/min）进行径流小区冲刷试验，分析冻融坡面侵蚀产沙时空变化规律。结果表明：相同初始解冻深度条件下土壤侵蚀产沙量随着坡度和流量的增大而增大，坡面第1坡段发生侵蚀最大，占总产沙量的68.24％，第3坡段产沙量一直趋于平稳状态；坡度相同时，侵蚀产沙量随着起始解冻深度和流量的增大而增大 ...
张 凯, 王 瑄, 周丽丽, 鲍永雪
doaj  

[A Meta analysis of risk factors for pulmonary hypertension related to bronchopulmonary dysplasia in preterm infants]. [PDF]

Zhongguo Dang Dai Er Ke Za Zhi
Yao ZZ, Yu AZ, Feng X.
europepmc   +1 more source

[Effect of TVT-Abbrevo in the treatment of female stress urinary incontinence]. [PDF]

Beijing Da Xue Xue Bao Yi Xue Ban
Guo R, Zhang L, Wang Y, Wang X, Wang X, Nian S, Zhang L, Xiao B, Lu Y.   +8 more
europepmc   +1 more source

[Impact of antenatal corticosteroids on respiratory morbidities in late preterm infants born to mothers with gestational diabetes mellitus]. [PDF]

Zhongguo Dang Dai Er Ke Za Zhi
Lin YC, Gao L, Shen W, Zheng Z, Lin XZ.
europepmc   +1 more source

[Interpretation of the "Expert consensus on the management of neonatal parenteral nutrition (2025)"]. [PDF]

Zhongguo Dang Dai Er Ke Za Zhi
Lin XZ, Zhang R, Chang YM, Li ZH, Liu XH, Bei F, Shen W, Tong XM, Chen C.   +8 more
europepmc   +1 more source

[Multicenter prospective study on the diagnostic value of syndecan-1 for necrotizing enterocolitis in preterm infants]. [PDF]

Zhongguo Dang Dai Er Ke Za Zhi
Yin XY, Zhao ZH, Wang Y, Cai N, Chen S.
europepmc   +1 more source

[A Study on the Association Between Various Insulin Resistance Assessment Indices and IVF-ET Outcomes in Patients With Polycystic Ovary Syndrome]. [PDF]

Sichuan Da Xue Xue Bao Yi Xue Ban
Liu Y, Hu Z, Han J, Gao R, Qin L.
europepmc   +1 more source

[Functional characterization of double-negative T cells isolated from leukoreduction filter residues]. [PDF]

Zhejiang Da Xue Xue Bao Yi Xue Ban
Xiang Z, Wu Y, Huang K, Wu F, Lin J, Sang L, Yang L.   +6 more
europepmc   +1 more source

[Determination of 38 antibiotic residues in honey by magnetic dispersive solid-phase extraction-liquid chromatography-tandem mass spectrometry]. [PDF]

Se Pu
Sun J, Zhang Y, Liu FM, Zhao W, Jin Y, Zhang L, Xue XF, Chen R, Zhou HT.   +8 more
europepmc   +1 more source