[High-throughput screening of multi-pesticide residues in animal-derived foods by QuEChERS-online gel permeation chromatography-gas chromatography-tandem mass spectrometry]. [PDF]
Li J +6 more
europepmc +1 more source
为阐明双季稻—绿肥种植模式下长期施肥对赤红壤肥力性状的影响,探讨土壤持续利用的培肥模式。通过长期定位田间试验,研究了长期不同施肥处理对赤红壤性水稻土土壤养分、酶活性及微生物性状的影响。结果表明:与不施肥相比,长期施肥显著增加了土壤有机质、碱解氮、有效磷、速效钾等养分含量,提高土壤蔗糖转化酶、脲酶、磷酸酶活性以及土壤微生物量碳氮含量和微生物群落物种丰富度、优势度、均匀度。其中土壤养分含量增加了4.5%~117.2%,酶活性提高了4.9%~68.1%,微生物多样性提高了3.2%~71.9 ...
张成兰, 艾绍英
doaj
为探索长江上游稻油轮作系统减少农田磷素流失和有效提高磷肥利用率的最佳施肥模式,降低磷对水体富营养化的影响,采用长期田间定点试验并结合室内试验分析,研究了化肥配施猪粪和水稻秸秆还田对紫色土磷肥效应及磷素迁移的影响。结果表明:在常规作物施肥基础上配合施用有机肥,适当减少化学磷肥施用量,对作物产量没有显著的减产效应,且能在一定程度上减少农田磷素损失,提高磷肥利用率。水稻磷肥利用率总体表现为常规施磷量减20%+猪粪有机肥(MDP)>常规施磷量减20%+秸秆还田(SDP)>常规施肥+猪粪有机肥(MP)>常规施肥 ...
韩晓飞, 谢德体
doaj
["One-pot" preparation of aminated carbon nanotube-modified magnetic nanoparticles and their application to the quantification of phenoxyacetic acid herbicides in cereal and vegetable samples]. [PDF]
Huang Y, Liu J, Huang X.
europepmc +1 more source
通过田间试验研究水稻不同覆盖旱作栽培方式对后茬大麦生长及土壤氮素动态变化的影响。结果表明,盖草处理后茬大麦表层土壤硝态氮含量最高,而土壤铵态氮含量由高到低依次为:水作〉盖草〉覆膜〉裸露,且硝态氮、铵态氮从表层(0~20cm)到底层(60~80cm)依次降低。具有明显的层次性。各处理都表现出0~40cm土层氮素表观盈余,水作、盖草和裸露处理后茬分别比覆膜处理后茬高40.5%,39.5%和36.1%。大麦籽粒产量以盖草处理后茬摄高,分别比水作后茬和裸露后茬增加837kg/hm^2和251kg/hm^2 ...
李勇, 徐阳春, 郭世伟, 沈其荣
doaj
[Research advances on the development and application of clustered regularly interspaced short palindromic repeats (CRISPR)/CRISPR-associated protein system]. [PDF]
Tan JJ, Peng YZ, Huang GT.
europepmc +1 more source
[Determination of cycloxaprid and paichongding residues in foods of plant origin by ultra performance liquid chromatography-tandem mass spectrometry]. [PDF]
Liu JJ +9 more
europepmc +1 more source
[Determination of three diphenyl ether herbicides in rice by magnetic solid phase extraction using Fe3O4@MOF-808 coupled with high performance liquid chromatography]. [PDF]
Yan M +7 more
europepmc +1 more source
[Determination of 26 herbicide residues in soil, sediment, and surface water samples using modified QuEChERS method combined with ultra-high performance liquid chromatography-tandem mass spectrometry]. [PDF]
Zhao L, Ma L, Huang LQ, Chen JB, Zhu WF.
europepmc +1 more source
[Recent advances in the use of graphene for sample preparation]. [PDF]
Feng J +5 more
europepmc +1 more source

