几种叶面肥在棉花上的应用效果

通过对液体钾肥等4种叶面肥5个处理在棉花上的对比试验 ,结果表明 ,喷施叶面肥能促进棉株株高增加 ,叶片增多 ,提高单株成铃率。其中以奇丽施和液体钾肥效果显著。

小麦施肥措施研究

小麦在不同生育期,对氮磷钾的需求是不相同的。从每个生育期吸肥规律看,小麦苗期氮的吸收较多,用于营养生存;拔节到孕穗是茎秆伸长期,钾的吸收量较多;孕穗到开花期,磷的吸收量较多。

Preliminary Discussion on Research Progress and Prospect of Slow Released Fertilizers

Slow/controlled release fertilizers （SRFs/CRFs） have been paid more at- tentions by the researchersin recent years. In this paper, the application effects and methods, types, current problem and development prospect of SRFs/CRFsboth at home and abroad were reviewed. The production principles and processes of urea- formaldehyde slow release fertilizers were introduced; and It is suggested that the urea-formaldehyde slow release fertilizers show great development to ease energy and environment pressure.

Investigation on Heavy Metal Contents and Fertility of Panax pseudoginseng-growing Soil in Guangxi

The fertility and heavy metals（As,Hg,Cr,Pb,Cd） contents in the Panax pseudoginseng-growing soil of Xinjia Town,Jingxi County,Guangxi Province were investigated.The results showed that the organic matter content and available K content in the investigated area reached the grade I and II,respectively,but the available K content in the plot 2 stayed at the grade III;the available N contents in the three plots were all in the grade IV,a deficiency state;the contents of four（As,Hg,Pb,Cd） out of the five kinds of heavy metals did not exceed the relevant standards,but that of Cr reached the slight pollution state.However,from the perspective of comprehensive pollution index,the heavy metal contents in the three plots all exceeded the cordon,and the heavy metals needed to be removed from the P.pseudoginseng-growing soil.

Topsoil as Affected by Dung Deposition Under Resting Places of Red Howler Monkey (Alouatta seniculus)

The short-term influence of dung deposition and the further redistribution of dung by dung beetles were studied under a resting place of the red howler monkey （Alouatta seniculus） living in tropical ralnforests of South America. Monkey dung was experimentally clumped on the field in a place used by troops of howler monkeys for resting in the Nouragues Reserve Station, French Guiana. Dung-treated plots were sampled serially over three weeks and compared with controls located in their immediate vicinity. The composition of the soil matrix （top 10 cm） was studied in successive microlayers using an optical method. Under the influence of dung beetle activity, the topsoil became more homogeneous by losing its litter, its content in earthworm faeces increased in the course of time, and surface mineral deposits were penetrated by roots. The results were interpreted in the light of present knowledge on the effects of soil animal activity on plant growth and survival of seedlings.

Methylation Characteristics of Perivisceral Fat Gene in Obese Rats with Phlegm-dampness Syndrome and the Effect of Wen Dan Decoction

Objective To observe the characteristics of gene methylation in obese rats with phlegm-dampness syndrome induced by the high-fat diet, and to study the effect of Wen Dan Decoction on gene methylation after the intervention. Methods Methylation sites of genes were detected by the MeDIP-seq method. Bioinformatics method was used to analyze the gene methylation characteristics of obesity with phlegmdampness syndrome and the effect of Wen Dan Decoction. Results (1) There were 3 242 methylation differential loci in dietinduced obesity with phlegm-dampness syndrome, of which 1 243 were down-regulated and 1 999 were up-regulated, involving 1 579 differential genes. GO analysis showed that "offactory receptor activity" and others were enriched. The possible signal pathways involved were "Olfactory transduction""Tuberculosis""Systemic lupus erythematosus" and "Ribosome".(2) After the intervention of Wen Dan Decoction in obesity with phlegmdampness syndrome, 4 046 different methylation loci were obtained, including 1 067 down-regulated loci and 2 979 up-regulated loci, involving 2 068 genes. GO analysis showed that "offactory receptor activity" and others were enriched. These genes involved seven signaling pathways, such as "Metabolic pathways".(3) Between diet-induced obesity with phlegm-dampness syndrome and Wen Dan Decoction intervening obesity with the phlegm-dampness syndrome, 582 common genes of methylation differential genes were obtained. After the intervention of Wen Dan Decoction, the number of GO enrichment items was more than that of obesity with phlegm-dampness syndrome, and even the same GO enrichment items involved more genes. Conclusions The phlegm-dampness syndrome of obesityinduced by diet had the characteristics of gene methylation changes, and the intervention of Wen Dan Decoction could also affect the status of gene methylation. The genes affected by Wen Dan Decoction were closely related to the methylation gene of phlegm-dampness syndrome of obesity-induced by diet but covered a wider range.

Mast cells and human hepatocellular carcinoma

AIM: To investigate the density of mast cells (MCs) in human hepatocellular carcinoma (HCC), and to determine whether the MCs density has any correlations with histopathological grading, staging or some baseline patient characteristics.METHODS: Tissue sections of 22 primary HCCs were histochemically stained with toluidine blue, in order to be able to quantify the MCs in and around the neoplasm using a computer-assisted image analysis system. HCC was staged and graded by two independent pathologists. To identify the sinusoidal capillarisation of each specimen 3μm thick sections were histochemically stained with sirius red, and semi-quantitatively evaluated by two independent observers. The data were statistically analysed using Spearman′s correlation and Student′s t-test when appropriate.RESULTS: MCs density did not correlate with the age or sex of the patients, the serum alanine aminotransferase (ALT) or aspartate aminotransferase (AST) levels, or the stage or grade of the HCC. No significant differences were found between the MCs density of the patients with and without hepatitis C virus infection, but they were significantly higher in the specimens showing marked sinusoidal capillarisation.CONCLUSION: The lack of any significant correlation between MCs density and the stage or grade of the neoplastic lesions suggests that there is no causal relationship between MCs recruitment and HCC. However, as capillarisation proceeds concurrently with arterial blood supply during hepatocarcinogenesis, MCs may be considered of primary importance in the transition from sinusoidal to capillary-type endothelial cells and the HCC growth.

AHolistic Evaluation of CO_2 Equivalent Greenhouse Gas Emissions from Compost Reactors with Aeration and Calcium Superphosphate Addition

堆肥可以杀灭病原菌、抑制杂草、缓慢释放养分、改良土壤、保持水分,是农业可持续发展的重要措施。堆肥过程中释放出大量温室气体尤其是甲烷,对全球环境变化产生重要影响。本研究通过量化比较不同堆肥方式下温室气体排放规律和排放量,以期实现减少堆肥堆制过程中温室气体排放的堆放方式。采用静态箱法研究了强制通风加过磷酸钙、强制通风不加过磷酸钙、翻堆通风加过磷酸钙、翻堆通风不加过磷酸钙四种处理的温室气体排放量。76天堆肥结束时,翻堆处理总有机碳降解51%-55%,强制通风降解大约44%。翻堆加过磷酸钙和不加过磷酸钙处理的甲烷排放量分别为15.35和15.27 g Mg-1堆料,高于强制通风处理排放量(加过磷酸钙和不加过磷酸钙处理分别为7.76 g Mg-1堆料和3.22 g Mg-1堆料)。在N2O排放量上,强制通风处理小于0.1%初始含氮量,翻堆处理约为0.1%初始氮。通风和翻堆过程中能量消耗分别相当于3.27、3.4、12.29和11.89 kg CO2-C Mg-1 堆料。过磷酸钙对温室气体排放影响很小,可能是大量秸秆作为堆肥填充料的加入保持了肥堆的高孔隙度和良好的通风条件。因此虽然强制通风堆肥可以节省空间且操作方便 ,在大规模集约化处理畜禽粪便时广泛应用,但翻堆通风由于其低建设成本和低温室气体排放量,以及较高的有机质分解效率,更适宜在我国农村采用。

Electroacupuncture compound anesthesia in radiofrequency ablation for hypertrophic inferior turbinate:a randomized controlled trial

Objective To explore the feasibility of electroacupuncture compound anesthesia in radiofrequency ablation for hypertrophic inferior turbinate.Methods The patients confirmed to the enrolled criteria were randomly divided into an observation group（n=31） and a control group（n=30）.In the observation group,electroacupuncture was applied to Sìbái（四白 ST 2）,Xiàguān（下关 ST 7）,Hégǔ（合谷 LI 4） and Zhīgōu（支沟 TE 6） on the left side for the anesthesia and the routine local anesthesia was done on the right side.In the control group,the routine local anesthesia was adopted on both sides.The feelings of pain,circulatory index and operation effect were observed and compared between the two groups.Results During radiofrequency ablation,the pain grades of two measurements on the left side and the 2nd measurement on the right in the observation group were all lower than those in the control group（all P〈0.05）.In the observation group,the pain grade on the left side was lower than that on the right side（P〈0.05）,and the systolic blood pressure and the heart rate were lower than those in the control group when undergoing the 2nd radiofrequency ablation on the right side and on the left side,respectively（all P〈0.05）.There was no significant difference in operation effect between the two groups.Conclusion Electroacupuncture compound anesthesia can meet the analgesia requirement of radiofrequency ablation for hypertrophic inferior turbinate,and would be helpful to prevent cyclic fluctuation during the operation at the same time.

Anticancer,antiobesity,and anti-inflammatory activity of Artemisia species invitro

OBJECTIVE： To investigate the anticancer, antiin flammatory, and antiobesity activity of methanol extracts of eight distinct species： Artemisia Stolon ifera （AST）, Artemisia Selengensis （ASE）, Artemisia .la ponica, Artemisia Montana, Artemisia Capillaris （ACA）, Artemisia Sylvatica （ASY）, Artemisio Keiskeana （AKE）, and Artemisia Scoparia （ASC） in vitro. METHODS： Antiproliferative activity was investigat ed in human breast cancer estrogen receptora pos itive T47D and negative HS578T cell lines exposed to the extracts at various concentrations （5200 mgl mL）for24, 48, and 72 h. For evaluating the antiin flammatory activity of the extracts, inhibition of ni trite synthesis was investigated in lipopolysaccha ride （LPS）stimulated cultures of macrophages cells exposed to 10, 50, 100, and 200 mglmL for 24 h. The antiobesity activity of the extracts was deter mined as triglyceride content and by a lipolysis as say in differentiated 3T3LI cells exposed to the extracts for 72 h at the same concentrations de scribed above. RESULTS： All extracts showed similar antiprolifera tive activity in a dose and timedependent man ner in HS578T cells. Although extracts at lower con centrations and shorter times stimulated growth of T47D cells, the antiproliferative effects of the extracts on T47D cells at higher concentrations （〉100 mg/ mL） for 72 h were significantly greater than those of HS578T cells. In case of antiinflammatory activi ty, some extracts （AST, ASE, ACA, and AKE） signifi cantly reduced nitric oxide production at higher concentrations in the presence of LPS compared with that in control cells. Antiobesity activity was showed with reducing lipid accumulation signifi cantly （〉50%） at concentrations above 100 mg/mL in most extracts （except AST and ACA）. Additional ly, AKE and ASC increased lipolysis by 11%24% compared with that in the control. CONCLUSION： Artemisia spp. demonstrates poten tial as bioactive food supplements.

Effects of Urea and Controlled Release Urea Fertilizers on Methane Emission from Paddy Fields: A Multi-Year Field Study

A four-year(2008–2011) field study was implemented in a major rice-growing region of China to better understand the effect of urea and controlled release fertilier(CRF, thermoplastic resin-coated urea in this study) on CH4 emission from paddy fields. Over the four years, the average CH4 emission during the rice growing seasons was 76.9, 65.8 and 64.9 kg CH4ha-1in treatments CK(zero N), U(urea) and C(CRF), respectively. Urea and CRF significantly reduced CH4 emission by 14.4% and 15.6%, and increased average rice grain yield by 25.8% and 19.7%(P < 0.05), respectively, compared with treatment CK. Flooding duration would affect CRF's effect on CH4 emission from paddy fields. Under normal aeration conditions, CH4 emission tended to be 3.9%–15.2% lower in treatment C than in treatment U from 2009 to 2011, while it tended to be 4.2% higher under delayed aeration conditions in 2008. The findings suggest that mid-season aeration(MSA) starting on D30(30 days after rice transplanting), just like the local practice, would optimize the CRF's effect on CH4 emission from rice fields in China. Over the four years, average rice yield did not differ between treatments U and C, and tended to be 5% lower in treatment C than in treatment U.