微蜜在玉米、花生、大豆生产中示范应用初探

微蜜为高级有机水溶肥,在生产中使用该产品,研究其对玉米、花生、大豆的生长及产量的影响。其试验结果表明,喷施微蜜,在玉米、花生化肥减量生产中,生长优势明显,株高、茎粗、双果率、大粒果和大粒果重都有明显的增加;大豆在化肥不减量的情况下,株高、每株荚数、每株粒数都有增加;这三种作物增产率均达到30%以上,在生产中可作为配合化肥减量使用的一个措施。

微蜜有机水溶肥对玉米生长、产量及效益的影响

为探索化肥减量增效技术的新途径,通过开展田间试验,研究了微蜜有机水溶肥对玉米的生长、产量及经济效益的影响。结果表明,在株高、穗位高、茎粗和最大叶宽方面均表现为处理3>处理1>处理2;在单穗长、单穗粗和百粒重方面,处理3均最高,其中单穗长较处理1、处理2分别高4.43%、8.02%,单穗粗较处理1、处理2分别高52.07%、54.58%,百粒重较处理1、处理2分别高5.13%、4.06%;处理3的亩产量较处理1高76.4 kg,增幅为7.50%,较处理2高106.2 kg,增幅为10.66%。化肥减量(氮减20%、磷减20%)配施微蜜有机水溶肥在化肥减量增效、促进玉米生长、提高产量及效益方面作用明显,建议推广应用。

“微蜜”水溶性液肥水稻化肥减量增效示范

河南奈安生态治理有限公司研发生产的高新技术产品奈安“微蜜”有机水溶肥,其成分为炭吸附聚谷氨酸。具有超高吸水、保水和保肥能力,能够提高肥料利用率,防治土壤板结、盐碱化,提高作物的抗逆能力,节肥增效、提质增产效果显著。为了进一步验证奈安“微蜜”有机水溶肥在水稻上增产增效的效果,在永胜县程海湖流域进行试验示范,为大面积推广应用提供科学依据。

奈安“微蜜”在哈密瓜上的试验

通过开展奈安“微蜜”有机水溶肥料哈密瓜田间肥效试验,结合测土配方施肥技术,减少传统化肥在哈密瓜地的用量,为以后的工作提供借鉴。

Cytological Studies on the Development of Sieve Element and Floral Nectary Tissue in Arabidopsis thaliana

Ultrastructural changes in the sieve element and dense cells of nectariferous tissue during the development of floral nectary in Arabidopsis thaliana L. were investigated with transmission electron microscopy. Samples were prepared with high pressure freezing and freeze substitution techniques. The ultrastructure of dense cell was similar to that of sieve element at its early developmental stage. With the concurrent agglutination of chromatin in the nucleus, the abnormal location of organelles and the high density of cytoplasm, the ultrastructural characteristics in die dense cells of the nectariferous tissue and in the sieve element are matched with those of the programmed cell death in animal and plant reported in recent years. The disorganization of nucleus and most organelles in the differentiation of sieve elements and dense cells is closely associated with the transportation and modification of pre-nectar and the transference of nectar. This suggests that the cytological changes in sieve element and nectariferous tissue are closely associated with the nectary functional activities.

几种生物产品对小麦病虫害及产量的影响效果评价

通过在小麦生产中应用微蜜、奈安、马大赛等生物产品,研究其对小麦的生长、病害及产量的影响。结果表明,应用生物产品后小麦生长优势明显,在第3次施药后,茎粗、穗长与普通小麦表现出差异。纹枯病病情指数降低42.69%,赤霉病病情指数降低31.88%,小麦产量增加18.1%,穗粒数、千粒重均高于对照。生物产品能提高小麦抗逆能力,有效降解残留除草剂,表现为病害发生轻、茎粗苗壮、落黄好、促早熟,提前成熟2~3 d,达到了小麦提质、显著增产的效果。

Study on the Chromatographic Fingerprint of Volatile Constituents from Acacia Honey

[Objective] The experiment aimed to study chromatographic fingerprint in volatile components of acacia honey and provide scientific evaluation and effective control on quality of acacia honey.[Method] Using solid-phase microextraction method to separate and detect volatile components and construct chromatographic fingerprint.[Result] The honey was preheated for 15 min in water bath at 40 ℃ and solid-phase microextraction 85 μmPA was used to extract in overhead air about 30 min,then put it into the injector and desorpted 3 min,which is in 230 ℃.The Supelco WaxTM10 30 m×0.25 mm×0.25 μm column and gradient heating program was the best method to separate volatile components from honey.83 fingerprint peaks were constructed,among which 17 common fingerprint peaks were comprised of chromatographic fingerprint of volatile components of acacia honey.[Conclusion] The chromatographic fingerprint could provide reference for quality control of acacia honey.

The Effects of Temperature and Humidity around the Beehives on the Distribution of Nosema ceranae, and also Geographical and Seasonal Activity of the Infection in the Eastern Black Sea Region of Turkey.

20 localities were randomly selected in Eastern Black Sea Region of Turkey and samples were collected from around the beehives from April to September. Total of 4,640 dead adult worker bees were examined during the study. Total infection rate in worker bees was 21.23%. Nosema ceranae was identified in all localities with molecular techniques. Temperature and humidity values were measured from around the beehives during field studies. The infection rate ofN. ceranae increased proportionally with increasing temperature and humidity factors. Humidity was more effective than temperature on the infection rate ofN. ceranae. The seasonal activity ofN. ceranae was studied. The highest infection rates were observed in June and July. N. ceranae infection rate was higher in localities that were in low-altitude than in localities that were in high-altitude.

Stingless Bee Propolis Effects on Experimental Infection of Apis florea with Nosema ceranae

Propolis collected by stingless bees from various types of plants has been used as an antimicrobial agent in several previous studies. We assessed the effect of propolis produced by a stingless bee, Trigona apicalis, on Apis florea experimentally infected with Nosema ceranae, a parasite of honeybees. For parasite inoculation each Nosema free-bee was fed 2μL of 50% （w/v） sucrose solution containing N. ceranae spores at 40,000 spores/bee and 0 as a negative control （CO）. Treated bees were provided with 0%, 10%, 20% and 50% propolis （w/v） in water, defined as 0P, 10P, 20P and 50P, respectively. We assessed the effects of propolis 14 days post inoculation. All propolis-treated bees had significantly higher survival than untreated bees. However, survival of Nosema-inoculated bees was lower than that of control bees. Bees treated with the highest propolis concentration （50P） had the highest survival ratio. No control bees became infected over the course of the study. However, N. ceranae infection rates of bees treated with 0P, 10P, 20P and 50P were 75 ± 1.4%, 72 ± 5.6%, 69± 4.2% and 47± 1.4%, respectively. In addition, propolis-treated bees had hypopharyngeal gland protein content that was significantly higher than 0P and CO bees. Overall, propolis treatment significantly reduced N. ceranae infection rate and bee mortality and was associated with increased hypopharyngeal gland protein concentration.