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甲草胺在水稻上的残留及消解动态
甲草胺 水稻 残留分析 消解动态 气相色谱电子捕获检测
2017/11/27
采用气相色谱电子捕获检测(GC-ECD)建立了水稻中除草剂甲草胺的残留分析方法。样品经乙酸乙酯提取, 乙二氨基-N-丙基硅烷(PSA)和石墨化炭黑(GCB)净化后采用GC-ECD检测。结果表明:在0.01~1 mg/L 范围内甲草胺浓度与响应值线性关系良好, 相关系数(r)为0.998 8。当甲草胺在水稻植株、稻壳、糙米、田水和土壤中的添加水平为0.01~0.5 mg/kg时, 平均回收率为79....
2013-2015年国家自然科学基金对植物保护学科资助情况分析
国家自然科学基金 植物保护 资助情况
2017/11/10
本文主要以2013-2015年国家自然科学基金对植物保护学科资助项目情况统计数据为依据, 分析了植物保护学科资助项目在生命科学部中的地位、二级学科受资助情况、各类项目受资助情况以及申请数与资助数的关系等, 并提出扩大申请规模、提升申请质量、谋求高层次项目资助、加强人才培养及团队建设等思考, 以期为植物保护科研工作者及依托单位申请科学基金提供参考。
玉米秸秆对4种农田杂草生长的抑制作用
玉米秸秆 农田杂草 生长抑制
2017/11/27
通过室内试验研究了玉米秸秆不同部位对鳢肠、反枝苋、马唐、稗等农田杂草幼苗生长的影响, 并通过盆栽试验研究了玉米茎粉末对供试杂草的防治潜力。结果表明, 玉米秸秆根、茎、叶均可显著抑制供试杂草胚根(种子根)的生长, 但对供试杂草胚轴(胚芽鞘)生长的作用不一。在不同的部位中, 以玉米茎的活性更高。盆栽试验结果表明, 玉米茎粉末对供试杂草有较好的防治效果, 用量为10 g/kg时对4种供试杂草的株高抑制率...
Inhibiting effect of shallow seed burial on grass weed emergence
weed control seedling emergence
2016/2/22
The efficacy of superficial tillage as a sustainable tool to reduce the emergence of Digitaria sanguinalis, Setaria viridis, and Sorghum halepense was evaluated with field experiments. Seeds were buri...
广西麦冬草坪杂草调查及药剂防除试验
麦冬 草坪杂草 调查 药剂防效
2017/11/27
2014-2015年对广西6个主要城市麦冬草坪杂草调查结果表明, 麦冬草坪常见杂草有30科107种, 其中菊科最多, 有22种, 占总数的20.56%, 其次是禾本科13种, 占总数的12.15%。危害较严重的有15种, 依次为白花鬼针草、狗牙根、马唐、胜红蓟、香附子、铺地黍、阔叶丰花草、双穗雀稗、积雪草、龙葵、光鳞水蜈蚣、红花酢浆草、小飞蓬、银胶菊和升马唐。药剂防除试验结果表明, 24%甲咪唑烟...
4种芽前除草剂防除直播小白菜田杂草的效果及其安全性
小白菜 芽前除草剂 除草效果 安全性
2017/11/27
采用田间试验方法研究了33%二甲戊灵乳油、96%精异丙甲草胺乳油、50%敌草胺水分散粒剂和90%禾草丹乳油4种芽前除草剂防除直播小白菜田杂草效果及其安全性, 筛选出了适于直播小白菜田的芽前除草剂。结果表明, 药后35 d, 33%二甲戊灵乳油有效用量371.25~742.5 g/hm2、96%精异丙甲草胺乳油 864~1 080 g/hm2和90%禾草丹乳油1 687.5~2 025 g/hm2处...
在黄花棘豆的不同生育期(返青期、现蕾期和初花期)以不同浓度的21%氯氨吡啶酸水剂对天然草地进行喷施, 探讨其对黄花棘豆的防控效果和对草地植被的影响。结果表明, 21%氯氨吡啶酸水剂对于黄花棘豆有很强的灭除效果:喷施后15 d, 85%的植株表现出明显药害症状; 喷施后35 d, 92.5%的植株药害等级达到4级。喷施后75 d, 125.0 mL/hm2处理的株防效可达85%以上; 187.5 m...
Progress toward Environmental Weed Eradication in New Zealand
Environmental weed eradication New Zealand weed control
2015/12/26
Data on 111 environmental weed eradication programs carried out by the New Zealand Department of Conservation (DOC) have been collected and summarized. A total of 21 programs were discontinued, and 90...
Mapping Giant Reed (Arundo donax) Infestations along the Texas–Mexico Portion of the Rio Grande with Aerial Photography
Invasive weed area estimation image classification maximum likelihood classifier
2015/12/26
Giant reed is an invasive weed throughout the southern half of the United States, with the densest stands growing along the coastal rivers of southern California and the Rio Grande in Texas. The objec...
Downy Brome (Bromus tectorum) Control for Pipeline Restoration
Cheatgrass oil and gas development propagule supply seed dispersal soil bulk density soil compaction
2015/12/26
Energy-extraction disturbances entail soil handling and often have large edge-to-area ratios. These characteristics should be considered when designing weed-control strategies. In western North Americ...
Herbicide Program Approaches for Managing Glyphosate-Resistant Palmer Amaranth (Amaranthus palmeri) and Waterhemp (Amaranthus tuberculatus and Amaranthus rudis) in Future Soybean-Trait Technologies
Herbicide-resistant crop traits herbicide-resistant weeds
2015/12/23
Herbicide-resistant Amaranthus spp. continue to cause management difficulties in soybean. New
soybean technologies under development, including resistance to various combinations of glyphosate,...
Labor-Saving Weed Technologies for Lowland Rice Farmers in sub-Saharan Africa
Chemical weed control hand weeding irrigated lowland mechanical weed contro
2015/12/23
Time requirements, weed control efficacy, and yield effects of three labor-saving weed technologies
were tested against hand weeding during three seasons in 2012 and 2013. The technologies incl...
Department of Entomology and Plant Pathology, University of Tennessee, Jackson
Crop consultants fallow glyphosate rate
2015/12/23
Glyphosate is the leading herbicide used in glyphosate-resistant (GR) crops and no-till
production systems. Evolved resistance to glyphosate in kochia was first reported in Kansas in
2007. Sho...
Corn Response to POST-Applied HPPD-Inhibitor Based Premix Herbicides with In-Furrow and Foliar-Applied Insecticides
Corn herbicide and insecticide corn injury herbicide and insecticide interaction
2015/12/23
In recent years injury has been reported in numerous Tennessee corn fields treated with an
organophosphate (OP) insecticide and either a mesotrione- or tembotrione-based herbicide premix.
Rese...
Targeting Weed Seeds In-Crop: A New Weed Control Paradigm for Global Agriculture
Bale direct system chaff carts Harrington seed destructor
2015/12/23
The widespread evolution of multiple herbicide resistance in the most serious annual weeds infesting Australian cropping
fields has forced the development of alternative, non-chemical weed cont...