水稻叶片营养的光谱诊断研究

通过测定不同氮肥水平下2个水稻品种的叶片营养数据和光谱数据,分析了遥感参量与叶片营养参数间的相关性.结果表明:在400～1 250 nm波段,叶片光谱反射率与SPAD、CHL呈显著负相关;在720～1 000 nm和1 450～1 500 nm波段,叶片光谱透射率与LWC间呈显著正相关;在400 ～ 650 nm波段,叶片光谱吸收率与CHL、SPAD和CAR呈显著正相关;分别构建了以NDVI、NDWI、GreenNDVI和NRI为自变量、叶片营养为因变量的光谱诊断模型,经检验,模型预测性较好,尤其利用NDWI(860,1 240)诊断LWC具有相对最大R2、最小RMSE和最小RE,表明此模型预测能力最强.     

现代物业小区车辆智能化综合管理系统

给出了一种现代物业小区车辆智能化综合管理系统，由物业管理中心的中央计算机和下层的各个小区服务器构成多级控制的网络化管理系统，怪实现进出车辆的登记识别、计时计费、等多种功能，并提出了一种能有效识别车辆特征的方法。     

CPV-Bt对湖南马尾松毛虫的药效试验

以湖南马尾松毛虫发生地采集的马尾松毛虫为试验材料，选用CPV、Bt 2种微生物复配后对其进行室内药效试验，结果表明：Bt对越冬代松毛虫前12d死亡率的影响显著，死亡率与Bt浓度呈正比，Bt浓度为6×10^7个芽孢／mL时，死亡率可达70．36％；Bt使用浓度为5×10^6芽孢／mL时，第一代松毛虫（群体饲养）处理6d平均死亡率可达70．41％，Bt使用浓度为1×10^7芽孢／mL时，平均死亡率可达75．09％；CPV对越冬代松毛虫处理12d后残留种群带毒率影响显著，带毒率与CPV浓度呈正比，当CPV浓度为2×10^5个多角体／mL时，其带毒率可达53．68％；复配药荆按其对第一代松毛虫（单虫饲养）的药效（前6d死亡率）可分为5类，其平均药效（死亡率）最高达100％，最低的仅为43．12％；CPV-Bt复配药刺防治马尾松毛虫的越冬代和第一代，若只需达到70％杀虫率和50％残留种群带毒率水平，越冬代宜选用2×10^5个多角体／mL＋6×10^7个芽孢／mL，第一代宜选用5×10^4个多角体／mL＋1×10^7个芽孢／mL。     

Expression Patterns of the Serine Protease Gene AlSP 3 in Apolygus lucorum (Hemiptera: Miridae) at Different Temperatures

As an important digestive enzyme gene, the serine protease gene AlSP 3 plays a key role in Apolygus lucorum for digesting conventional cotton. To understand the effect of different temperatures on the expression level of AlSP 3, we analyzed the expression patterns of AlSP 3 in A. lucorum reared at different temperatures using real-time polymerase chain reaction. The results showed that at the normal temperature of 24 ℃, the expression of AlSP 3 in A .lucorum at different nymphal stages was similar. The expressions of AlSP 3 in the female adult at the pre-mating stage and the male adult at post-mating stage were 19.71- and 7.16-fold higher than their control at the 1^st nymphal stage, respectively, which were significantly higher than at any other stages. However, expression in the 4^th to 5^th A. lucorum at the nymphal stage increased with rising temperature in the range of 21～30 ℃. At 30 ℃, the expression of AlSP 3 in the 2nd to 5^th A. lucorum was the highest. The expression levels of AlSP 3 in adult A. lucorum reared at different temperatures during the new emergence and pre-mating stages were significantly higher than that of the control reared at 24 ℃ (P < 0.01), while the expression during the post-mating stage at 18℃ was higher than that at other temperatures. When incubated at extreme temperatures (4 ℃ and 40 ℃), the expression of AlSP 3 in female and male adult A. lucorum was significantly higher than that at 24 ℃ (P < 0.01). Taken together, our results showed that the external environment temperature and the internal stage of A. lucorum or its sex all had significant effects on the expression of AlSP 3 in A. lucorum (P < 0.01), and that there was some interactions between them. Therefore, AlSP 3 is very important for the female adult A. lucorum to obtain nutrition at the early stages and temperature is an important limiting factor for the expression of AlSP 3.     

江西大豆育成品种分析及前景展望

综述了我国大豆育种现状,对江西育成的8个大豆品种进行了系谱分析,并在此基础上对江西大豆发展的前景进行了探讨。     

日粮不同水平ω-3多不饱和脂肪酸对蛋鸡脂质代谢和免疫功能的影响

试验共设4个组,对照组日粮含3%菜油,试验组分别为基础日粮含2%菜油＋1%鱼油、1%菜油＋2%鱼油和3%鱼油,研究不同水平ω-3多不饱和脂肪酸（ω-3PUFA）对蛋鸡机体脂质代谢、过氧化作用和免疫功能的影响。结果显示,与对照组相比,各试验组血清TC含量分别提高0.24%（P〉0.05）、1.86%（P〉0.05）和3.55%（P〈0.05）;2%和3%鱼油添加组TG含量分别降低12.52%（P〉0.05）和51.18%（P〈0.05）;各试验组HDL-C含量分别提高55.70%、70.89%和36.71%（P〉0.05）;LDL-C含量分别降低20.02%、21.79%和9.07%（P〉0.05）;各试验组血清MDA含量和SOD活力均较对照组有所降低（P〉0.05）;肝脏MDA含量升高（P〉0.05）;1%、2%鱼油添加组肝脏SOD活力分别提高27.36%和31.24%（P〉0.05）。ω-3PUFA降低了腹脂HSL活性（P〉0.05）,腹脂率以3%鱼油添加组为最高,较对照组提高52.96%（P〈0.05）。血清IgGI、gAI、gM、C3、C4以3%鱼油添加组为最高,分别比对照组提高19.70%（P〈0.05）、40.56%（P〉0.05）、35.66%（P〉0.05）、30.32%（P〉0.05）和30.34%（P〉0.05）。研究表明,ω-3PUFA可以影响机体脂类代谢,提高机体免疫功能,但同时伴随脂质过氧化物合成增加。综合各项指标,日粮中以2%鱼油添加量为宜。     

统筹城乡发展,促进工业化和城市化协调发展的思考

针对我国城乡经济发展这一矛盾,探讨如何统筹城乡发展,促进工业化和城市化协调发展。     

一种新颖的电流模式神经网络设计

将ＣＣⅡ引入神经网络，提出了一种新颖的电流模式神经网络，仿真结果表明，其动态特性优化电压模式网络。