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长期单施不同量化肥和有机肥后盐化潮土pH和EC的变化
肥料类型 施肥水平 土壤pH 土壤EC
2019/10/22
【目的】研究长期单施不同量有机肥和化肥对华北平原盐化潮土区土壤pH和EC的影响,以期为本地区科学实施有机肥替代化肥提供数据支撑和理论依据。【方法】本研究以始于2006年的长期定位试验为研究平台,在冬小麦–夏玉米一年两熟种植制度下,有机肥和化肥处理均设置10个氮水平,N 0、60、120、180、240、300、360、420、500和600 kg/hm2,共计19个处理,监测了连续施用不同量化肥和...
ECH2O EC-5水分传感器测定沙地土壤含水率的可靠性
EC-5水分传感器 沙地土壤水分 校正
2016/12/22
对ECH2O EC-5土壤水分传感器测定科尔沁沙地土壤含水率的可靠性进行验证。[方法] 以烘干法测定数据为基准值,采用回归分析方法建立ECH2O EC-5水分传感器测定沙地土壤含水率的校正方程,并用独立的样本进行验证。[结果] ECH2O EC-5水分传感器测定值与烘干法测定值之间具有很好的线性回归关系(R2=0.96),呈显著正相关(p<0.01);验证结果显示,ECH2O EC-5土壤水分传感...
Comparison of two sensors ECH2O EC-5 and SM200 for measuring soil water content
bulk density CaCO3 ECH20 soil moisture sensor EC-5 fraction of sand particles SM200 sensor soil and soil water salinity soils of the Czech Republic soil water content
2015/3/3
The goal of this study was calibration of the ECH20 soil moisture sensor EC-5 and the sensor SM200 for selected soils of the Czech Republic. Based on the soil maps of the Czech Republic and various cl...
在建立饱和及土水比1∶5(m∶v)条件下ECe 与EC1:5 相关关系的基础上,建立EC1:5 的土壤盐分分级指标,评价了传统管理条件下设施越冬长茬和春茬的土壤盐分动态。结果表明:设施菜田土壤ECe 与EC1:5 呈极显著正相关,在京郊土壤条件下换算公式为EC1:5 =0.105 ECe;果类蔬菜中茄子和辣椒属敏感蔬菜作物,苗期和全生育期耐盐性根层土壤EC1∶5 临界值分别为0.10 dS·m...
作者在观察以精制松树油+棕榈油、精制松树油、棕榈油等三种植物油替代二甲苯为溶剂的1%甲氨基阿维菌素苯甲酸盐EC对“上海青”(Brassica campestris L.)的药害情况的基础上,测定了“上海青”体内蛋白质、氨基酯和叶绿素等营养物质的含量以及对植株株高的影响,以探讨植物油替代二甲苯配制的甲维盐EC对”上海青”的安全性。结果表明,精制松树油+棕榈油、精制松树油两种溶剂配制的甲维盐EC对“上...
30%苯醚甲环唑·丙环唑EC对水稻纹枯病和稻曲病的田间防效
30%苯醚甲环唑·丙环唑EC 纹枯病 稻曲病 病情指数 防治效果
2009/10/12
[目的] 推广30%苯醚甲环唑〖DK〗·丙环唑EC。[方法] 2008年在江苏省高淳县进行了田间药效试验,调查其对水稻纹枯病和稻曲病的防效。[结果] 施药后各药剂均未对水稻产生药害。30%苯醚甲环唑〖DK〗·丙环唑EC 225、300 ml/hm2对水稻纹枯病的防效分别为9336%、92.03%,差异不显著;对稻曲病防效分别为67.60%、81.71%,差异显著。其中,300 ml/hm2处...
Effect of Alum and Liquid Alum on pH, EC, Moisture,Ammonium and Soluble Phosphorus Contents in Poultry Litter During Short Term:a Laboratory Experiment
alum ammonium EC liquid alum moisture pH soluble reactive P
2009/7/29
Aluminum sulfate (alum, [Al2 (SO4)3. 14H2O]) additions to poultry litter can be used effectively as litter amendments, which can lead to greatly reduce ammonia emissions and phosphorus solubility in t...
Rapid Evaluation of Salty Wind Damage by the Amount of Salt Adhered to the Panicles of Rice Plant using Electric Conductivity(EC)
EC Panicle Rice plants Salt Salty wind damage Sodium chloride Working curve
2009/7/8
Decline of rice yield by salty wind is related to the amount of Na adhered to the rice panicles. Generally, the amount of Na (and/or Cl) in solution is determined by titration with silver nitrate,at...
The chronic effect of the botanical insecticide Neem EC on the pollen forage of the bumble bee Bombus terrestris L.
bumble bee B. terrestris L. Neem EC pollen forage legumes
2010/1/19
The botanical insecticide Neem EC is allowed for use as a pest control agent in
organic farming. Although the preparation is considered safe for honey bees, its effect on
bumble bees has been less...
试验表明,5% 精喹禾灵EC 对5 ~7 叶期冬油菜生长安全。生产上使用该药防除冬油菜田内禾本科杂草具有较好的防除效果。
从防效及使用成本等角度综合考虑, 推荐田间使用剂量以1 050 ~1 200 ml / hm2 为宜。
0.2%高渗甲维盐EC防治水稻二化螟试验
水稻二化螟 防治 0 .2% 高渗甲维盐EC
2009/4/10
试验结果表明,0 .2 % 高渗甲维盐EC 对1 、2 代二化螟具有一定的防效。0 .2 % 高渗甲维盐EC 600 ml/ hm2 对二化螟的防效可达
82% 左右, 显著高于0 .2 %高渗甲维盐EC450 ml/ hm2 , 但低于5 锐劲特SC 450 ml / hm2 。
The impact of propiconazole (Tilt 250 EC) on the growth and the breathing of hard wheat isolated roots(Triticum durum, GTA and Vitron varieties)
Propiconazole tilt 250EC wheat Triticum durum GTA vitron
2009/3/3
Fungicides are recognized as non-toxic compounds, or have a weak ecotoxicological risks. The use of these products is responsible for an important part of the increase of the cereals output. However...
寿光大棚菜地土壤呼吸强度、酶活性、pH与EC的变化研究
土壤呼吸强度 土壤酶活性 大棚菜地
2012/4/1
为防治土壤退化、促进农业可持续发展提供科学依据,以寿光地区露地土壤作对照,研究了连作1、5、8和12年大棚蔬菜(番茄)土壤有关生物学指标的变化。结果表明,土壤呼吸强度和脱氢酶活性棚内高于棚外,并随连作年限延长开始增强而后减弱,由于管理差异,12年棚龄土壤又回升。随着连作年限延长,土壤脲酶活性逐渐减弱,而过氧化氢酶活性逐渐增强;土壤呼吸强度和酶活性都由表层向底层逐渐减弱。土壤pH随连作年限增加逐渐下...
Effects of biopesticide Neem EC on the Large White Butterfly, Pieris brassicae L. (Lepidoptera, Pieridae)
biopesticide Neem EC the Large White Butterfly
2010/1/14
Effects of biopesticide Neem EC on the Large White Butterfly, Pieris brassicae L. (Lepidoptera, Pieridae).
STUDIES OF TOXICITY OF DERMALLY-ABSORBED NURELLE D 550 EC PREPARATIONS
dermal toxicity chlorpyrifos cypermethrin histopathology
2010/12/27
The aim of the study was the evaluation of the toxic effect of a twocomponent,preparation Nurelle D 550 EC (500 g of chlorpyrifos and 50 g cypermethrin per 1 l), administrated dermally.