对供试的4个抗虫组合进行抗虫性观察和生态适应性、生育期、主要经济性状、丰产性等鉴定研究。结果表明,4个组合的抗虫性、产量及经济效果表现显著。

According to the investigation and analysis on yield and component factors of three wheat(Triticum aestivum L.) cultivars,Zhengmai 9023,Xiangmai 55 and Xiangmai 25 during 2009～2012,effective spike number had the most significant positive correlation with actual production(path=0.412 5);1 000-kernel-weight was the second(path=0.2872);while grain number per spike had the lowest(path=0.151 7) correlation.The results of correlation analysis and path analysis were consistent.The variation coefficient of 1 000-kernel-weight during different year was the highest,followed by effective panicle;the lowest was of grain number per spike.In order to reach the maximum yield,the breakthrough should be realized on increasing the grain number and 1 000-kernel-weight based on the optimum effective spike number,and coordinate the relationship among the three indexes.

The pressure,temperature and time of extracting volatile oil from Asian mint by supercritical CO2 method were studied through orthogonal experiment.The results showed that pressure has the greatest impact on extracting ratio;while time had minimal impact.The optimized extraction conditions were,pressure,12Mpa;temperature,55°C;time 1.5h.

综述了棉花雄性不育系的细胞质雄性不育系、细胞核雄性不育系、温敏不育系的来源及转育方法；介绍了国内近年来通过审定的两系或三系棉花新品种，井对棉花新的雄性不育系的培育和三系育种进行了展望。

With the solution to the cultivation of novel,good and special vegetables and the characteristics of Foshan climate and vegetable taken into consideration,four cultivation patterns,which were suitable for novel,good and special vegetables,were proposed. They are the combination of large and fine items,the growth of short-term leafed vegetables in the near suburbs,the combination of various-sized vegetables in the further suburbs and the three-dimentional pattern for mixed cultivation.These patterns provide technical support for the annual cultivation of vegetables.

The impact of Mentha haplocalyx Britq.essential oil extraction on the soaking time, solvent usage, microwave processing time and drying temperature of four factors were studied.The results showed that various factors on the impact of volatile oil extraction rate from strong to weak were as follows: soaking time, drying temperature, solvent, microwave processing time.The best combination of M.haplocalyx Britq.essential oil extraction was A3B3C2D1,that was the soaking time 5h, solvent 600mL, microwave processing time 40s, drying temperature 30℃ .The volatile oil extraction rate of the combination was 2.23%.

Three male-sterile as female lines and six male inbred lines were used to make 18 combinations using incomplete di-allel cross.The general combining ability,specific combining ability and heritability of vertical foot-path,horizontal foot-path and weight of tumorous stem mustard were determinated.There was no obvious difference of vertical foot-path among combinations.The general combining ability was more important for vertical foot-path than specific combining ability.Both general combining ability and specific combining ability were the same important for tumorous stem mustard weight.For the weight of tumorous stem mustard,the combination of female Ⅰ and male Ⅳ was the best,with the general combination ability of 0.87 and 1.972 for the parents respectively,and the specific combining ability of 3.948.For the quality of the vertical foot-path,the combination of female Ⅰ and male Ⅷ was the best,with the general combining ability of 0.535 and 1.907 respectively,and the specific combining ability of 0.819.

Based on the "spring and bamboo"agriculture tourism park design(mianzhu,sichuan),we discussed the three key points on landscpae architecture of agriculture tourism.Glorifying the agriculture circumstance,improving the ecosystem circumstance and providing various recreation activities,we could have a continuable development agriculture tourism park.

随着广东省经济的发展,告别了蔬菜短缺时代,吃菜难、吃好菜更难的状况早已不复存在.在农业产业结构调整中,国家、地方、集体的蔬菜基地和农户自身的调整,使蔬菜的面积迅猛增加,产量大大提高,2002年全省蔬菜播种面积1914.8万hm2(公顷),总产量达2 800.1万t(吨),全省蔬菜播种面积和产量分别居全国第四和第五位.目前,广东已逐步形成城郊型商品菜、粤西北运菜、粤北反季节蔬菜和以珠三角为主的出口菜四大商品蔬菜生产基地.

应用遥感和GIS技术对河南省森林资源进行调查研究.研究中试用NDVI波段及其它波段组合对河南省森林植被进行解译,效果较好.研究结果表明,河南省森林资源分布很不均匀.并提出河南省森林资源建设的合理化建议.表2,参6.

千筋京水菜又叫京菜、千筋菜、水白菜,为十字花科芸苔属二年生蔬菜,它外形新颖,口感风味类似于小白菜,柔嫩清香,可炒食、凉拌、腌食、做汤等,是一种富含矿物质的蔬菜新类种.据测定,每百克千筋京水菜的叶中含维生素C53.9 mg(毫克)、钙185 mg(毫克)、钾262.50 mg(毫克)、钠25.58 mg(毫克)、磷28.90 mg(毫克)及铜0.13 mg(毫克)、锌0.52 mg(毫克)、锰0.32 mg(毫克)、锶0.95 mg(毫克)等营养元素,是理想的保健食品.

对于菊花褐斑病的发生规律及有效防治药剂进行了研究.病原菌以菌丝体和分生孢子器在病残体上越冬,分生孢子借风雨和水传播,再侵染频繁,温度在24℃～28℃、高湿有利于病害的发生发展.药剂防治试验表明:各药剂间防效差异显著,以50%甲基托布津(800倍)和65%代森锌(600倍)最佳.