Shuitu Baochi Xuebao, 2005 针对华北平原小麦—玉米两熟区不同土壤耕法下玉米产量及玉米生育期土壤硝态氮迁移进行研究,结果表明,翻耕模式下玉米产量最高,免耕下最低。在0~180 cm土体中,收获期与苗期相比,翻耕硝态氮含量平均减少了66.6%;旋耕平均减少了21.7%;免耕则平均减少了20.9%。累积峰出现的深度与硝态氮淋失有直接关系。对比3种模式,翻耕累积峰最深,硝态氮淋失威胁最大;免耕无明显累积峰。在施肥、灌溉等影响硝态氮淋失的可控因子以外,从耕作模式上研究硝态氮淋失是今后研究的方向。
胡立峰 胡春胜 安忠民 张爱军 陈阜
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Shuitu Baochi Xuebao, 2008 采用室内模拟土柱淋洗方法研究了无机复合肥、有机复合肥、猪粪堆肥和花生麸4种肥料单施和两两混施条件下氮磷在赤红壤中的淋失特征。结果表明,各处理总氮淋失率在43.2%～74.8%之间,总磷淋失率在0.01%～0.08%之间,赤红壤中肥料氮淋失严重,肥料磷淋失有限。肥料单施处理的无机氮淋失量和有机氮基本相近,肥料混施处理的无机氮淋失量远高于有机氮;各施肥处理磷的淋失均以颗粒磷为主。肥料混施显著增加铵态氮和无机氮淋失,减少有机氮和总氮淋失。猪粪与复合肥混施减少颗粒磷和总磷淋失 ...
曾曙才 +3 more
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Shuitu Baochi Xuebao, 2011 针对长期不合理高化肥投入量导致城郊区菜地土壤环境恶化的现状,为探讨氮肥减施对城郊区菜地土壤氮磷累积及蔬菜产量品质的影响,应用田间小区试验,研究了长沙市郊2种不同菜地土壤中,氮肥减施20%与缓释尿素,脲酶抑制剂/硝化抑制剂,土壤调理剂配合施用的环境和农学效应。结果表明:与常规施肥处理相比,采用缓释尿素减施20%化学氮肥(80%N(CRU))有效降低了菜地土壤Olsen-P和NO3--N的含量,减少了其面源污染风险,但该处理蔬菜可食部分容易累积硝酸盐,也增加了食用风险;通过添加脲酶抑制剂/硝化抑制剂减施20%
全智 +6 more
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[Research progress on the pathogenesis and clinical treatment of cirrhotic cardiomyopathy]. [PDF]
Zhonghua Gan Zang Bing Za ZhiWang KY, Liu L.
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Zhonghua Gan Zang Bing Za ZhiWang H, Chen X, Lu YY.
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[Effect of intraoperative dexmedetomidine on postoperative sleep disturbance in elderly surgical patients: a prospective multicenter cohort study]. [PDF]
Nan Fang Yi Ke Da Xue Xue BaoMeng B +11 more
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[Determination of 16 organic ultraviolet absorbers in drinking water by solid phase extraction-ultra-high performance liquid chromatography-tandem mass spectrometry]. [PDF]
Se PuWang Z, Zhao C, Ye BX, Chen YY.
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[Using activity-based protein profiling method to explore the antitumor targets of spiramycin derivatives]. [PDF]
Se PuYang RY, Feng TZ, Pei SJ, Qi H, Piao HL.
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[How I treat pediatric febrile infection-related epilepsy syndrome]. [PDF]
Zhongguo Dang Dai Er Ke Za ZhiDeng XL, Peng J.
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[Establishment of an gastric dysfunction and depression comorbidity model simulating clinical etiology in mice using a combined stress protocol]. [PDF]
Nan Fang Yi Ke Da Xue Xue BaoHuang Q +7 more
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