基于虚拟力和果蝇优化算法混合控制水声传感器网络部署策略

提出了基于改进的虚拟力和果蝇优化(Virtual Force and Fruit Fly Optimization,VFFO)算法混合控制水声传感器网络部署优化的方法.该方法首先通过虚拟力算法对传感器节点的初始部署进行优化,以得到较好的初始部署状态;然后通过改进的果蝇算法对水声传感器网络进行重部署,同时分析了算法的移动部署能耗问题.仿真结果表明,该算法在相同能耗下能够得到更高的网络有效覆盖率.     

温度胁迫下果树膜系统变化及其修复机制研究进展

从膜脂相变、膜透性及稳定性、活性氧自由基、保护酶系、质膜蛋白等方面概述了温度胁迫下果树膜系统的变化,同时提出了提高膜系统抗性和修复能力的措施.     

高压静电果蔬保鲜机理分析

本对高压静电场果蔬保鲜机理进行了较为深入的分析,认为果蔬受高压静电场的作用,吸收了场能,改变了果蔬内部的能量分布,导致细胞膜电势发生变化;同时,高压电场电离周围空气产生Ｏ３,利用Ｏ３杀菌和分解果蔬中产生的乙烯的作用,破坏果蔬的后熟条件;另外,高压静电场的作用降低了苹果中生物酶的活性,使其呼吸代谢活动受到抑制,从而有效的保存水分达到保鲜效果。     

有机肥对土壤理化性质和红富士苹果果实品质的影响

通过不同有机肥对苹果园土壤理化性质和果实品质影响的试验研究，结果表明：生物有机肥可以改善土壤理化性状，增强土壤肥力，提高果实品质。施用生物有机肥后，土壤容重较对照降低12．5％，毛管孔隙度增加9．8％，速效磷、速效钾、全氮、全磷和有机质含量分别比对照高出47．8％、77．1％、35．7％、65．0％、75．8％，优果率(80％)是对照(40％)的2倍。     

苦楝果实植物杀虫剂的开发研究

报道了用苦楝果实制备植物杀虫剂－“灭虫萜”的研究结果。通过室内、小区和大面积推广试验，使用“灭虫萜”乳剂，稀释浓度为２００－５００倍，对菜青虫防效为８９．６７％－９６．６７％、棉蚜防效为７６．７８％－８０．５３％等多种农业害虫有较好的防治效果。     

Terellia fuscicornis (Diptera: Tephritidae): biological and morphological adaptation on artichoke and milk thistle

The biology, morphology, and genetics of Terellia fuscicornis on cultivated artichoke and its new recorded host, Silybum marianum, are examined. Morphometrically, the two host‐associated populations were distinct. Except for egg length, all immature stages of the artichoke‐associated population were larger. Principal component analysis, based on head and wing measurements, showed that the adults from both populations clustered into two groups, with the adults reared from artichoke being larger. The ovipositor was significantly longer and blunter in the artichoke‐associated females, reflecting the larger flower heads exploited. Male terminalia measurements showed significant differences between the two populations. Several differences in courtship behaviour were detected between the two populations. Although the two populations show allochronic isolation, sequencing of two mitochondrial genes, ND1 and COI, and one nuclear gene, 18S, revealed no genetic differences between the two populations.     

提升山西省果业竞争力的几点建议

全面分析了山西省目前果业的生产状况及存在的问题，提出了加速果业发展，提升果品竞争力的建议。     

荔蝽口针危害与荔枝果实结构的关系

从荔蝽Tessaratoma papillosa)危害荔枝(Litchi chinensis)各期果实的解剖,探索口针刺穿果实的途径及抗逆结构与落果的关系。幼果期口针从果皮突顶部→辐射状细胞;或果柄皮层→中柱内而导致落果。中果期口针从果皮突石细胞层网的网眼薄壁细胞→辐射状细胞,果皮产生褐色斑点;或果柄皮层和中柱鞘薄壁细胞→韧皮部→形成层,被刺组织发生裂缝而落果。后果期口针从锥状果皮突间的薄壁细胞→疏松组织,果皮出现裂口;在果柄从皮孔→皮层石细胞或中柱鞘厚壁组织而被阻,落果较少。     

枇杷的气调小包装试验

讨论了包装薄膜、气体成份、贮藏温度对枇杷气调包装效果的影响，得出初步结论：用10～30μm厚 LDPE簿膜对枇杷自然气调包装，室温下保存期可达10天．8℃下冷藏，保存期可达30天．