浅圆仓仓顶自动喷水降温试验

为了缓解夏季高温对仓温及粮温的影响,对浅圆仓仓顶进行自动喷水降温试验,利用水的蒸发带走仓顶热量,以减少外热向仓内热传递,减缓仓温和粮温上升,从而延缓粮食陈化速度,保持粮食原有品质,确保储粮安全度夏,为最终实现绿色储粮创造有利条件。     

蘑菇下脚料和稻草还田对直播早稻生长和产量的影响

试验结果表明,蘑菇下脚料还田和稻草还田可以降低土壤容重,提高直播早稻的出苗率,增加成熟期稻株的绿叶数,增强后期的抗倒能力,产量分别比对照提高8.7%和4.0%,增产效果明显。     

无线美防治香蕉线虫试验初报

为了减轻香蕉线虫危害,研究了新型防线虫药剂——无线美对香蕉线虫病的防治效果及对香蕉植株外观的影响。结果表明:与常规药剂相比,无线美不但能有效防治香蕉线虫病,而且对香蕉的叶长、叶宽、茎粗及根系生长有促进作用。     

岑软3号油茶落果规律及其叶片营养元素含量的动态变化

为给油茶(Camellia oleifera)果实发育期间的管理和营养调控提供理论依据和实践指导,以岑软3号油茶为研究对象,探索其落果规律与叶片营养元素含量的变化。结果显示,岑软3号油茶3个落果阶段分别为1月上旬-3月上旬、4月上旬-5月下旬和8月上旬-10月上旬,落果率分别为12.99%、40.26%和14.29%;在对油茶林进行营养调控时,建议冬季休眠前的施肥应对本研究测定的全部营养元素进行不同程度的补充,夏季施肥应适当补充氮、磷、钾、铜、钙、锌和镁。     

广西机直播稻发展难点及对策

通过实地调研、科学试验和文献查询等方法,全面掌握了广西直播稻的发展现状,明确了广西机直播稻发展中存在的主要问题。广西发展水稻机直播存在的主要问题是:缺乏适宜品种、现有直播机的适应性不广、一次性成苗全苗困难、杂草防治难等。并提出了相应的技术对策,以期为广西发展水稻机直播提供指导。     

工程施工安全管理研究

随着我国经济的快速发展,工程项目建设的发展日新月异,随之而来的工程安全事故日趋增多,造成了重大经济损失和人员伤亡,产生了极坏的社会影响,安全管理形势严峻.如何控制安全事故的发生,保障施工人员的生命 财产安全,是安全生产中急待解决的现实问题.文章主要对施工过程中的安全管理进行探讨,并提出施工安全管理的具体措施,希望能对工程施工的安全管理有所帮助.     

Application Experiment in the Field of FMD,CSF and HP-PRRS Vaccines Simultaneously Vaccinated at Two Different Sites

In order to explore the optimal immune procedure of foot-and-mouth disease (FMD), classical swine fever (CSF) and highly pathogenic porcine reproductive and respiratory syndrome (HP-PRRS) vaccines in backyard pigs in rural areas, field immune experiment was carried out in two towns. Town A used "332" immune procedure, namely, FMD vaccine and CSF vaccine were simultaneously injected at different sides of the neck, and HP-PRRS vaccine was injected 14 days later. Town B used "321" immune procedure, namely, HP-PRRS vaccine and CSF vaccine were mixed together and injected in one side of the neck, and FMD vaccine was injected in the other side of the neck. FMD, CSF and HP-PRRS antibodies were detected by ELISA, and FMDV, CSFV and HP-PRRSV were detected by RT-PCR. The assessment indexes, including the immune density, immune side-reaction rate, death rate of pigs, positive rate of antibody of backyard pigs, positive rate of antibody of slaughter pigs, positive rate of pathogen of backyard pigs, positive rate of pathogen of slaughter pigs and so on, were collected and analyzed. The results showed that, compared with town A used "332" immune procedure, the HP-PRRS immune density, the positive rate of CSF and HP-PRRS antibody of backyard pigs, the positive rate of HP-PRRS antibody of slaughter pigs were significantly increased (P<0.05), while the death rate and the positive rate of HP-PRRSV of slaughter pigs were significantly decreased (P<0.05) in town B used "321" immune procedure. The other major assessment indexes had no significant difference (P>0.05). The results indicated that the immune efficacy of "321" immune procedure was better than that of "332", and it was worthy to be applied in clinical practice.     

农作物品种区域试验新问题和新对策

分析当前广西农作物品种区域试验存在的问题：试验地的选择与设计不科学、调查区域观察记载项目的最佳时机掌握不好、品质评价不科学等等,提出相应对策：加强技术培训、提高业务素质、科学制定方案、提高试验质量、正确对待区域试验的分析评价等,为正确审定品种提供技术参考。     

不同施肥水平对冬种免耕马铃薯产量及经济效益的影响

为探讨广西冬季免耕马铃薯高产高效栽培适宜的施肥水平,2008年在平果县进行大田试验研究不同施肥水平对免耕马铃薯生长和产量的影响.结果表明,在一定施肥范围内,随着施肥水平的提高,虽然免耕马铃薯的株高、茎粗、分枝数、单株结薯数,单株薯重以及产量随之增加,但马铃薯农田纯收益并没有随着施肥水平的提高而增加,单位肥料马铃薯生产量随着施肥水平的提高反而逐渐降低.其中N_(180)P_(180)K_(360)处理的农田纯收益最高,单位肥料生产量也较高.可见,在本试验条件下,每公顷施N180 kg+P_2O_5180 kg+K_2O360 kg(即复合肥1200 kg+50%硫酸钾360 kg),是比较适宜广西马铃薯免耕高产高效栽培的施肥水平.     

仙人掌提取物对广西麻鸡蛋品质的影响

为研究仙人掌提取物对广西麻鸡生产性能和蛋品质的影响,试验选取38周龄的广西麻鸡1 200只为试验动物进行为期7周的饲养试验。试验鸡随机分为3组,每组两个重复。对照A组饲喂基础饲粮,试验B和C组分别在基础饲粮中添加仙人掌提取物300和500 mg·kg-1,结果表明,试验B和C组的蛋黄比率、哈氏单位、蛋比重显著高于对照A组(P0.05)。说明饲粮中添加仙人掌提取物可显著提高广西麻鸡蛋品质(P0.05)。