钼对镉胁迫下山羊红细胞膜自由基代谢及脾脏组织病理学的影响

36只体质量约为20kg的山羊被随机分为4个组,每组9只,试验组灌服相同量的CdCl2和不同量的[（NH4）6Mo7·O24·4H2O],对照组灌服对应量去离子水。按每千克体质量计算,低钼组（0.5mg/kg（Cd）＋15mg/kg（Mo））、中钼组（0.5mg/kg（Cd）＋30mg/kg（Mo））、高钼组（0.5mg/kg（Cd）＋45mg/kg（Mo））,每组3个重复。于试验的第0、10、20、30、40、50天每组山羊采血,于试验的第0、25、50天每组山羊取脾脏和肝脏,测定相关指标。结果显示：（1）随着试验时间的延长,各试验组红细胞膜MDA含量呈上升趋势,GSH-Px、GST、SOD活性呈下降趋势;在第50天时,与对照组相比,各试验组红细胞膜MDA含量上升（P〈0.01）,GSH-Px、GST、SOD活性降低（P〈0.01）;（2）与对照组相比,高钼组脾脏的脾小体体积减小,可见散在的含铁血黄素沉积;（3）随着试验时间的延长,各试验组肝脏Bax基因表达量呈上升趋势;在第50天时,与对照组相比,低钼组和高钼组Bax表达量上升（P〈0.05）。结果表明,钼可导致镉胁迫下山羊红细胞膜自由基代谢紊乱,并能损害脾脏的免疫功能并且上调肝Bax基因的表达量,钼和镉体现为协同作用。     

纳米氧化锌/葡萄皮红改性大豆分离蛋白膜的制备与性能研究

为改善大豆分离蛋白膜的性能,将纳米氧化锌（ZnO Nanoparticles,ZnO NPs）和葡萄皮红（Grape-Skin Red,GSR）加入大豆分离蛋白（Soy Protein Isolate,SPI）中制备SPI/ZnO NPs/GSR复合膜,对复合膜的性能进行表征。结果表明当葡萄皮红、ZnO NPs和大豆分离蛋白以1∶2∶25的质量比制备复合膜时,相对于SPI/ZnO NPs膜,葡萄皮红可提高ZnO NPs和大豆分离蛋白的相容性,改善ZnO NPs在SPI膜中的分散性,并与ZnO NPs发挥协同作用提高SPI膜的机械性能、耐水性能和热稳定性（P<0.05）。SPI/ZnO NPs/GSR复合膜相比较于SPI膜,拉伸强度从1.37 MPa升至3.28 MPa,熔点从194 ℃升至231 ℃,含水率从34.41%降至25.37%,水蒸气透过系数从5.57×?10-12 (g·cm)/(cm2·s·Pa)降至4.74 × 10-12 (g·cm)/(cm2·s·Pa)。此外,复合膜对金黄色葡萄球菌和大肠杆菌表现出优异的抗菌性能,抑菌圈直径随着活性成分的添加呈上升趋势（大肠杆菌：SPI膜无,SPI/ZnO NPs膜2.29 cm,SPI/ZnO NPs/GSR膜2.36 cm;金黄色葡萄球菌：SPI膜无,SPI/ZnO NPs膜2.32 cm,SPI/ZnO NPs/GSR膜2.42 cm）,在活性包装应用中具有极大潜力。研究结果为大豆分离蛋白基薄膜的生产应用提供参考。     

红心火龙果品质及产量对稻壳有机肥施用量的响应

本研究通过探索红心火龙果营养品质和产量对稻壳有机肥施用量的响应,旨在为红心火龙果的施肥管理提供参考.以5年生'台农二号'红心火龙果为供试材料,设置3个稻壳有机肥施用水平(低施肥量L:22500 kg/hm2;中施肥量M:45000 kg/hm2;高施肥量H:90000 kg/hm2),调查火龙果全年各批次果实的还原糖、...     

Differences between wheat genotypes in damage from freezing temperatures during reproductive growth

Cereal crops in the reproductive stage of growth are considerably more susceptible to injury from freezing temperatures than during their vegetative growth stage in the fall. While damage resulting from spring-freeze events has been documented, information on genotypic differences in tolerance to spring-freezes is scarce. Ninety wheat genotypes were subjected to a simulated spring-freeze at the mid-boot growth stage under controlled conditions. Spring-freeze tolerance was evaluated as the number of seeds per head at maturity after plants were frozen at −6 °C. Plants that froze, as confirmed by infrared (IR) thermography, died shortly after thawing and consequently the heads did not mature. Only in plants that had no visible freezing (super-cooled) were heads able to reach maturity and produce seeds. In plants that super-cooled four genotypes had significantly higher seed counts after being exposed to freezing than three with the lowest. In addition, significant differences between genotypes were found in whole plant survival among those that had frozen. Genotypes with high whole-plant freezing survival were not necessarily the same as the super-cooled plants with the highest seed counts. Spring-freeze tolerance was not correlated with maturity suggesting that improvement in freezing tolerance could be selected for without affecting heading date. Spring-freeze tolerance was not correlated with freezing tolerance of genotypes of plants in a vegetative state, either under non-acclimated or cold-acclimated conditions indicating that vegetative freezing tolerance is not a good predictor of spring-freeze tolerance.     

丘陵红黄壤区施用399对“一种两收”再生稻根系和产量的影响

[目的]研究399对"一种两收"再生稻的影响。[方法]以适宜丘陵红黄壤种植的丰两优香1号、准两优527、宜优673再生稻品种为材料,分别设置喷施399和不喷施399(CK)2种处理,研究各处理对再生稻根系和产量的影响。[结果]结果表明:施用399使水稻在生育期上延缓成熟,且施后再生稻的总根系数量、白根数量、根鲜重、根干重、根体积大幅度增加,同时在两季总产量上准两优527、丰两优香1号和宜优673品种分别比对照增产6.39%、4.86%、5.94%。[结论]施用399有利于准两优527、丰两优香1号和宜优673再生稻品种再生根的发生。     

基于Labview的植物红光吸收动态监测

为了动态监测植物生长过程中对红光的吸收，提出了一种基于Labview光频转换接收探头透射法实时监测植物红光吸收的检测方案，该方案属于无损检测，具有操作安全、简便的特点。     

桑树赤锈病的发生与防治

调查广西宜州市桑树赤锈病发生状况,分析桑树赤锈病发生特点及规律,针对宜州市桑树赤锈病大面积发生状况,提出有效地防治措施。     

红壤旱地芝麻防早衰叶面调控剂筛选研究

研究结果表明,速效肥料、生长调节剂及抗病药剂对保持芝麻生长中后期的正常生长都能起到积极作用。"磷酸二氢钾+硝酸铵+腐植酸+赤霉素"配制能有效防控红壤旱地芝麻早衰,在此配方基础上,添加代森锰锌能对防控芝麻叶部及茎部病害起到一定的作用,从而增强了红壤旱地上芝麻的抗早衰能力。