Spatial-uniform application method of methane fermentation digested slurry with irrigation water in the rice paddy field     

Kozue Yuge  Hiroki Maeda  Munehiro Tanaka  Mitsumasa Anan  Yoshiyuki Shinogi 《Paddy and Water Environment》2014,12(3):335-342

Promoting biomass utilization, the objectives of this study were to clarify the spatial distribution of nitrogen, one of the most important fertilizer components in the methane fermentation digested slurry (i.e., the digested slurry), and to establish an effective method to apply spatial-uniformly digested slurry with irrigation water in the rice paddy field. A numerical model describing the unsteady two-dimensional flow and solution transport of paddy irrigation water was introduced. The accuracy of this model was verified with a field observation. The tendencies of the TN simulated in inlet and outlet portions had good agreement with the measured data and the accuracy of the numerical model could be verified. Using the numerical model, scenario analyses were conducted to determine the method for spatial-uniform application of the digested slurry with irrigation water. The simulated results indicated that drainage of the surface water and trenches at the soil surface were effective for spatial-uniform application of the digested slurry with irrigation water in the rice paddy fields. The effect of the trenches was maximized when the surface water of the rice paddy field was drained adequately.  相似文献   

Farmer as Scientist: Bringing Farmers Knowledge to Research     

Anan Polthanee 《Asia Pacific viewpoint》1992,33(2):145-150

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猪,鸡,人胆汁液晶研究初报     

傅安安  黄邦保 《江西农业大学学报》1990,12(1):90-93

关于人的胆汁中存在液晶已见报道,有人推测液晶的出现与胆结石有关。我们用正交的偏振光显微镜观察了猪、鸡的胆汁,并将观察结果和人的胆红素结石伴生胆汁及肌同醇结石伴生胆汁的观察结果进行比较,发现了他们的异同之处.从而使我们对胆汁液晶的产生及其性质,以及胆汁液晶和胆结石之间的关系有了进一步的了解.  相似文献   

Removal of macro-and microelements by the main crops in the Amur oblast     

V. I. Golov  E. V. Anan℉eva  O. S. Samokhvalova 《Russian Agricultural Sciences》2007,33(5):292-294

The distribution of the main nutrient elements (N, P, K) as well as microelements (Zn, Mn, Cu, Co, Mo) and heavy metals (Pb, Cd, Sn, Cr, and Ni) in various organs of soybean and wheat plants in the full ripeness stage is studied. It is found that the topography of chemical elements in plants depends on their physiological role, concentration, crop species and its yielding ability.  相似文献   

杨树抗寒抗旱育种的进展   总被引：10，自引：1，他引：9  

段安安  张硕新 《西北林学院学报》1997,12(2):94-99

系统地回顾了国内外杨树抗寒抗旱育种的成果和进展。可得出以下结论：（１）杨树抗寒抗旱性改良基本上有两个途径：即选择天然杂种和进行人工杂交育种,而且人工杂交的育种成果远远多于选择随机存在的天然抗寒抗旱杂种。（２）白杨派树种的研究和进展远远落后于青杨及黑杨派树种。主要表现在杂交方式简单,以单交方式为主;选用的亲本有银白杨、新疆杨和山杨;在青杨及黑杨派树种的改良中,小叶杨是一个很好的抗寒抗旱亲本;（３）在杂交方式上由简单到复杂、从单交到多交（三交、四交）,抗寒抗旱改良和综合改良的效果随着杂交方式的不断复杂而愈来愈好。同时认为：在遗传工程、生物技术蓬勃发展的今天,杂交育种这一古老的方法仍是杨树抗寒抗旱育种最有效和最基本的手段;在已有的抗寒抗旱种质资源基础上,采用杂种作亲本,进行更复杂的杂交方式是创造杨树抗寒抗旱品种的一个重要方向  相似文献   

河北杨优树根萌条诱导及嫩枝扦插的研究     

段安安 《西北林学院学报》1988,3(1):9-16

本文报导用根段促萌及嫩枝杆插方法进行河北杨成年优树的初繁试验。结果表明,根萌条诱导所需的有效积温(≥5℃)至少在206℃;嫩枝生根所需的有效积温(≥5℃)至少在200℃。根段的萌条均属皮部萌条类型;嫩枝的生根均属皮部生根类型。此试验方法可为河北杨无性系对比及筛选提供良好的优树初繁材料。  相似文献   

Effect of red clover on the microbial transformation of phenanthrene and octadecane in the soil     

A. V. Nazarov  E. A. Shestakova  L. N. Anan’yina 《Eurasian Soil Science》2017,50(8):971-976

The influence of red clover (Trifolium pratense L.) plants on the decomposition of phenanthrene and octadecane in the soil has been studied. Effect of plant root mass on the abundance of hydrocarbondegrading bacteria, the composition of their communities, and the degradation of hydrocarbons in the soil has been revealed. Changes in the taxonomic composition of hydrocarbon-degrading bacteria under the effect of red clover are characterized by an increase in the abundance of species from the genera Acinetobacter, Kaistia, Novosphingobium, Pseudomonas, and Xanthomonas. A positive effect of the studied microbial–plant association on the degradation of octadecane and especially phenanthrene in the soil has been revealed.  相似文献   

Spatial variability in the carbon of microbial biomass and microbial respiration in soils of the south of Moscow oblast     

E. G. Gavrilenko  E. A. Susyan  N. D. Anan’eva  O. A. Makarov 《Eurasian Soil Science》2011,44(10):1125-1138

Soil samples from the upper 10-cm-thick layer of the humus horizon (without forest litter) were taken in Podol’sk and Serpukhov districts (1130 and 1080 km², respectively) of Moscow oblast. At each sampling site, ecosystem (forest, plowland, or fallow), soil (soddy-podzolic, soddy-gley, bog-podzolic, meadow alluvial, gray forest, and anthropogenically transformed soils of lawns and industrial zones), predominant vegetation, and topography (floodplain and low, medium, and upper parts of watersheds) were determined. The carbon content of the microbial biomass (C_mic) was determined by the method of substrate-induced respiration; we also determined the rate of basal (microbial) respiration (BR) and the organic carbon content, pH, and particle-size distribution. Overall, 237 samples from Serpukhov district and 45 samples from Podol’sk district were analyzed. The BR/C_mic ratios (respiration quotient qCO₂) and C_mic/C_org ratios were calculated. The C_mic content in the soils ranged from 43 to 1394 μg C/kg; the BR varied from 0.06 to 25 μg CO₂-C/g per h, qCO₂, from 0.34 to 6.52 μg CO₂-C/mg C_mic per h; and the C_mic/C_org ratio, from 0.19 to 10.65%. It was found that the most significant factors affecting the variability of the C_mic and BR are the parameters of ecosystem (50% and 80%, respectively) and soil (30% and 9%, respectively). The most significant variability of these indices was found in forest soils; it was mainly controlled by the soil texture (33 and 23%) and the C_org content (19 and 24%). The C_mic parameter made it possible to differentiate the soils of the territory for the purposes of their evaluation, monitoring, and biological assessment more clearly than the BR value and the soil chemical characteristics.  相似文献   

Dysfunction of erythropoietin-producing interstitial cells in the kidneys of ICR-derived glomerulonephritis (ICGN) mice     

Yamaguchi-Yamada M  Manabe N  Kiso M  Goto Y  Mori T  Sakata C  Anan S  Nagao M  Yamamoto Y  Ogura A 《The Journal of veterinary medical science / the Japanese Society of Veterinary Science》2005,67(9):891-899

Anemia is a major secondary symptom in chronic renal disorder (CRD), but the precise cause of insufficient production of erythropoietin (EPO) remains unclear owing to the controversial localization of EPO-producing cells in the kidneys. The ICR-derived glomerulonephritis (ICGN) mouse, a new hereditary nephrotic mouse, is an appropriate model of anemia associated with CRD. By using an amplified in situ hybridization technique, we detected and counted the renal EPO-producing cells under both normoxic and hypoxic conditions. The expression levels of renal EPO mRNA were quantified and oxygen gradients were also assessed immunohistochemically. Amplified in situ hybridization clarified that EPO-producing cells were peritubular interstitial cells in the middle region of renal cortex in both ICR and ICGN mice. Hypoxia (7% O2) induced low oxygen tension in proximal tubular epithelial cells of renal cortex, and increased the expression of EPO mRNA and the number of EPO-producing cells in both ICR and ICGN mice. However, hypoxia did not increase the serum EPO levels in ICGN mice. The ICGN mouse is a good model for anemia associated with CRD, and the suppression of EPO protein production in the renal EPO-producing cells is considered to be a potential cause of anemia associated with CRD.  相似文献   

毛新×银灰双杂种无性系抗寒抗旱性的生理测定     

段安安  杨敏生  朱之悌 《西部林业科学》1998,(3)

对苗期表现优良的杂种无性系在叶片解剖构造、叶片失水率、枝条电导率和盆栽控水条件下的生长等生理指标的测定表明，毛新×银灰双杂种无性系具有抗寒和抗旱特性的解剖和生理学基础，在生产上可以依据苗期生理指标综合进行早期预测和选择。  相似文献