20%甲维盐·丙溴磷乳油防治稻纵卷叶螟田间药效试验

试验药剂20%甲维盐.丙溴磷EC用量以321~339g/ha在低龄幼虫高峰期使用,速效性好、持效期长,对稻纵卷叶螟有较好的防治效果,且对水稻安全,值得在生产上推广使用。     

海绵中氯丙酸脱氯微生物的分离及其初步研究

以氯丙酸为单一碳源,通过富集培养从大连海域繁茂膜海绵中分离筛选得到139株氯丙酸降解菌。经过初步筛选得到35株降解能力较强的菌株。对这些菌株的耐盐试验表明,分离到的大部分菌株均具有较强的盐耐受能力,多数菌株为中度嗜盐菌。其中部分菌株可以在14.6%以上盐度培养基中生长,可能为极端嗜盐菌。多底物降解试验表明,大多数菌株均能降解多种底物,这些菌株可用于有机氯污染环境生物修复。同时也说明海绵对水体中有机氯污染物具有去除作用。     

森林旅游业工程设施用地能否视为直接为林业生产服务用地

<正>1现行法律法规对在林地范围内修筑工程设施的相关规定《中华人民共和国森林法实施条例》第十八条规定"森林经营单位在所经营的林地范围内修筑直接为林业生产服务的工程设施,需要占用林地的,由县级以上人民政府林业主管部门批准;修筑其他工程设施,需要将林地转为非林业建设用地的,必须依法办理建设用地审批手续。前款所称直接为林业生产服务的工程设施     

贾家庄村村歌

山西省汾阳市贾家庄村与举世闻名的汾酒之都杏花村相毗邻,全村700户,2600口人。解放以来,贾家庄一直是全国农业战线的先进典型,1950年代坚持走合作化道路,治水改碱拔穷根,受到省     

Salt Stress Effects on Germination,Plant Growth and Accumulation of Metabolites in Five Leguminous Plants

The investigation was conducted to determine physiological criteria of early selection for salt tolerant leguminous plants. Plants were subjected to 5 levels of salt stress at the roots （0, 50, 100,150 and 200 mM NaCI）. Results showed that sodium chloride had an underrating effect on growth of stems and seed germination of the species studied. The germination rates of seeds of Glycine max and Phaseolus vulgaris （sensitive glyeophytes） were affected from 3 g/L of NaCl, with critical thresholds at 9 and 12 g/L respectively. In contrast, critical thresholds with Mucunapoggei （facultative halophyte）, Vigna unguiculata （moderately tolerant glycophyte） and P. adenanthus （natural halophyte） was found to be above 21 g/L. The reduction of stems growth rate were not significant in P. adenanthus whereas in M. poggei and V. unguiculata this inhibition was observed just when nutritive solutions were enriched with 200 mM. The lipid contents were reduced in all the species under salt stress, whereas proteins and proline contents in the leaves were substantially increased in tolerant species （M. poggei, P. adenanthus and V. unguiculata）. In contrast, proteins and leaf proline contents were negatively affected by salt concentration to G. max and P. vulgaris. Seed germination, proteins and proline could be used as physiological criteria of early selection for salt tolerant leguminous plants.     

Effects of Sowing Methods on Upland Rice in Lowland Rice-Vegetable Sequence in Inland Valley

Triple cropping in the inland valleys of southwestern Nigeria is technically possible but the third crop between the main crop and vegetables has poor establishment due to soil saturation. Identification of appropriate sowing methods is required in this niche. A field experiment was conducted at the University of Agriculture, Abeokuta, Nigeria in 2007/2008 and 2008/2009 cropping seasons to evaluate the effect of sowing methods on the performance of upland rice （Oryza spp.） in a lowland rice-vegetable sequence. The first, second, and third crops in the sequence were planted in May, September and December, respectively. Two upland rice varieties, namely New Rice for Africa 1 （NERICA 1） and ITA 150 constituted the main plot treatments while the subplot treatments were sowing methods. The mean grain yield of lowland rice for two years was 7.74 t ha^-1. The fluted pumpkin had a fresh leaf weight of 14.78 t ha^-1. The grain yields of the two upland rice varieties （1.81 and 1.85 t ha^-1） and sowing methods which ranged between 1.63 and 2.05 t ha^-1 were similar in both cropping seasons. However, the interaction of variety by sowing methods had a significant effect on grain yield. Transplanting and pre-germinated broadcast had the highest grain yield for NERICA 1 while dry broad cast and pre-germinated dibbled had the highest in ITA 150. Hence, the productivity of triple cropping in the inland valley was enhanced by sowing methods.     

沈阳供电公司完成盐密值测试

2012年2月7日，辽宁省沈阳供电公司全面完成对85处送电线路盐密点、31座变电站39处监测点的盐密值测试，针对可能出现的污闪隐患，沈阳供电公司积极组织送电、变电专业人员对线路、设备进行了盐密测试。该公司将依据盐密值指导线路运维工作，     

高寒地区大豆病虫害防治技术

近几年北安市大豆病虫的发生、危害严重,发生面积扩大,危害程度加重,新病虫危害加剧;广大农民科学用药水平低,盲目用药和滥用药现象明显,农田农药使用次数2次以上,为增强效果用药量比正常使用量高出17%,大豆安全性不达标。每年北安市大豆因病虫草危害面积4～4.67万hm2以上,一般减产10%～15%,严重的减产40%～50%,个别地块甚至绝产。为此,针对一些重大危险性病虫害,因地制宜制定了一套科学有效的控制技术,并大力推广实施。     

鲁西化工农化人员指导农民施肥

<正>本报讯近日,鲁西化工农化人员赵元新在河南延津县小店镇二级商周经理的带领下到西闫屯村送科技下乡,指导农民给玉米施肥,讲解玉米施肥知识。根据玉米的需肥生长规律,7、8月份是玉米追肥的季节,鲁西化工农化人员直接到农民赵师傅玉米地里,讲解硫基高氮肥如何进行施肥,施肥量,与传统施尿素相比的好处,怎样辨别复