Ozone Disinfection Test in Chicken House     

Lv Yanqiu  Huang Dongfeng  Yang Xingang  Yao Xuejun  Ba Liangxing  Xue Yong  Wang Meili  Xing Guodong  Zhao Yongfu  Li Chunmei  Meng Weiya  Wang Yimeng 《畜牧与饲料科学》2018,(2)

[Objective] The paper was to verify the disinfection effect of ozone on livestock and poultry houses.[Method] The empty chicken house was disinfected by ozone with the help of ozone disinfector.[Result] As the ozone disinfector was worked for 60 min,the average sterilizing rate of air was 85.33%;the average sterilizing rate on the surface of chicken coop was 86.77%;and the average sterilizing rate of wall was 89.13%.The disinfection effect was obvious.[Conclusion] The results will provide references for promotion and application of ozone disinfector in breeding in-dustry.  相似文献   

早熟桃新品种‘美博’的选育及栽培技术     

白瑞霞  王越辉  马之胜  贾云云  李建明  李学华 《北方园艺》2018,(14):208-210,封2

‘美博’桃是由‘甜丰’ב玫瑰露’杂交培育出的早熟、优质桃新品种。果实圆形,平均单果质量244g,果皮茸毛少短且,85%以上果面着鲜红色。果肉白色,纤维较少,汁液中等,硬溶质,风味甜,有香气,可溶性固形物含量12.5%,可滴定酸含量0.14%,品质优良。核近圆形,粘核。花粉多,自花结实,丰产。果实发育期83d左右。  相似文献   

中国马铃薯土壤氮磷钾丰缺指标与适宜施肥量   总被引：3，自引：2，他引：1  

孙洪仁  冮丽华  张吉萍  吕玉才  王应海 《中国农学通报》2020,36(5):78-85

采用零散理论数据整合法和“养分平衡-地力差减法”确定适宜施肥量新应用公式,开展了中国马铃薯土壤氮、磷、钾丰缺指标与适宜施肥量研究。结果表明：中国马铃薯土壤第1~7级全氮丰缺指标依次为≥2.22、1.55~2.22、1.08~1.55、0.76~1.08、0.53~0.76、0.37~0.53、＜0.37 g/kg,碱解氮依次为≥306、203~306、135~203、90~135、60~90、40~60、＜40 mg/kg;北方土壤有效磷(Olsen-P)第1~7级丰缺指标依次为≥50、25~50、13~25、7~13、4~7、2~4、＜2 mg/kg,南方土壤有效磷(Olsen-P)第1~6级丰缺指标依次为≥81、43~81、27~43、15~27、4~15、＜4 mg/kg;中国土壤速效钾(NH₄OAc-K)第1~6级丰缺指标依次为≥307、182~307、120~182、72~120、31~72、＜31 mg/kg。当氮、磷、钾肥当季利用率分别为40%、20%、50%,马铃薯目标产量15~75 t/hm ²时,土壤养分丰缺级别第1~7级的适宜施氮量范围依次为0~0、23~113、45~225、68~338、90~450、113~563、135~675 kg/hm ²,适宜施磷量范围依次为0~0、12~60、24~120、36~180、48~240、60~300、72~360 kg/hm ²,适宜施钾量范围依次为0~0、21~105、42~210、63~315、84~420、105~525、126~630 kg/hm ²。  相似文献   

TuMV management for brassica crops through host resistance: retrospect and prospects     

G. Li  H. Lv  S. Zhang  S. Zhang  F. Li  H. Zhang  W. Qian  Z. Fang  R. Sun 《Plant pathology》2019,68(6):1035-1044

Turnip mosaic virus (TuMV), the only potyvirus known to infect brassicas, is a devastating virus threatening many economically important brassica crops, including cabbage, Chinese cabbage, oilseed rape and mustard. TuMV disease, which was first discovered in the United States, is now found worldwide, especially in Europe, Asia and North America. TuMV results in a yield loss of up to 70% and has a wide host range, infecting most cruciferous plants, as well as many non-cruciferous species. This virus is also characterized by high pathotype diversity because of its highly variable genome structure and has been divided into 12 pathotypes. These characteristics, as well as its nonpersistent transmission mode by as many as 89 aphid species, mean the disease is difficult to prevent through traditional methods such as the application of chemicals, prompting researchers to seek host resistance for effective control. During the last decade, extensive studies have been conducted to investigate inheritance, mapping and cloning of the TuMV resistance genes, and several NB-LRR- or eIF-encoding loci with divergent molecular mechanisms have been uncovered. These studies have greatly facilitated resistance breeding for brassica crops and have advanced our understanding of virus−host interactions.  相似文献   

Improving abamectin bioavailability via nanosuspension constructed by wet milling technique     

Bo Cui  Yan Lv  Fei Gao  Chunxin Wang  Zhanghua Zeng  Yan Wang  Changjiao Sun  Xiang Zhao  Yue Shen  Guoqiang Liu  Haixin Cui 《Pest management science》2019,75(10):2756-2764

  相似文献   

不同基质栽培百子莲生长效应评价   总被引：1，自引：1，他引：0  

陈香波  申瑞雪  吕秀立  冯建华  李圃锦  张冬梅 《中国农学通报》2020,36(19):73-79

为探明基质不同理化性质对大花百子莲幼苗生长的影响,筛选百子莲适合的栽培基质,采用草炭、枯枝落叶腐熟肥、椰糠、松树皮、黄沙、珍珠岩、园土等材料配成8种混合基质,以园土作为对照,测定不同基质理化性质与不同基质栽培百子莲幼苗的形态、生长及相关生理指标,进行指标间相关性分析。结果显示,土壤总孔隙度、毛管孔隙度与叶片数、最大根长间存在显著正相关(P＜0.05),土壤EC值与根干重、根冠比及单叶鲜重间显著负相关(P＜0.05),土壤全钾与地上部分鲜重、地上部分干重间显著负相关(P＜0.05),表明改善土壤通气状况能够促进百子莲生长,EC值增高限制根系干物质积累、降低植株根冠比,钾素营养抑制百子莲地上、地下部分营养生长。方差分析表明,不同混合基质处理间百子莲幼苗各项指标存在极显著差异(P＜0.01),大多数配比基质百子莲生长形态指标优于园土对照,经生长指标综合评价,草炭、枯枝落叶腐熟肥、椰糠、松树皮、黄沙以2:1:1:1:1配比混合基质综合评价指数最高(0.91),其次为草炭、椰糠、黄沙以2:1:1配比基质(0.66),表明这2种混合基质较适宜百子莲生长,可在百子莲规模化生产中推广应用。  相似文献   

基于手机App的输电线路缺陷管理     

吕鑫  吴健  孙世平 《农村电气化》2020,(4):54-56

文章通过分析输电线路运维管理中传统的缺陷管理方法,得出传统缺陷管理的弊端和不足。提出一种输电线路缺陷管理手机App,辅助运维人员快捷完成缺陷报送,方便手机查看各类标准规定,解决了传统缺陷报送的诸多弊端和不足,提高了输电线路管理效率,为今后智能电网和泛在电力物联网建设提供思路。  相似文献   

高校要当好新时代农业科技推广体系中的"特种兵"     

王航  于湘莉  曲美玲  吕红芝 《农业科技管理》2020,39(2):54-57,69

中国特色社会主义进入新时代以来,农业科技创新和应用推广愈发重要,农业科技推广体系中高校的作用日益凸显.文章阐述了我国农业科技推广体系的构成及特点,并分析了高校在该体系中的地位和作用,剖析了高校技术供给的局限性及主要原因,从加强学科建设、将自主创新与产学研相结合、探索和实践高校农技推广模式等方面提出了高校当好农业科技推广体系中的"特种兵"的对策建议.  相似文献   

Potential distribution of two invasive pineapple pests under climate change     

Jiufeng Wei  Lingfei Peng  Zhiqiang He  Yunyun Lu  Fang Wang 《Pest management science》2020,76(5):1652-1663

  相似文献   

基于TOPSIS法的农机维修方案评估研究     

曾宪  吕建新  鄢阳  刘正国 《农机化研究》2012,(4):69-71

科学地评估农机维修企业的维修方案,对提高客户服务质量及维修企业实现利润最大具有重要的现实意义。为此,基于效用函数及逼近理想点法(TOPSIS,Technique for Order Preference by Similarity to Ideal Solution)理论原理,建立了农机维修方案评估模型。该模型通过比较各方案与次理想解及次负理想解的距离,采用效用函数来求解距离的效用,从而筛选出更加符合实际的维修方案。实例结果验证表明,该算法是有效和可行的。  相似文献