The new wheat variety Yannong 22 with early maturity,high yield and wide adaptation was bred by complex hybridization at Yantai Academy of Agricultural Sciences.It was derived from the parental varieties of Lumai 14,Wei 132 and 87Chu 20.Ranking first of the tested varieties in Shandong wheat regional and productoin trials of late sowing and early maturing group,Yannong 22 was approved by Shandong Province Crop Cultivar Examination and Approval Committee.The breeding strategies for early maturing and high yield wheat were also introduced on formulating aim,selecting parents,earlier ear selecting and comprehensive considering of other characters.

<正>22.5%钙尔美悬浮剂由英国欧麦思农用流体公司生产,青岛华垦进出口有限公司进口。该产品是目前国内市场上钙含量最高的液体钙肥,为中国唯一的悬浮剂型。另外,除含有钙营养外,还含有适量的镁、硼、锌和钼等中微量元素。钙尔美配方独特,多种作物在生长期能够

<正>栖霞市苹果生产规模巨大,栽培面积4.3万hm2,年总产12亿kg,收入16亿元。自1994年起,苹果种植面积、综合服务、果园管理、品种质量、总产单产、企业效益六个方面均居全国第一,是名符其实的"中国苹果之都"。在2001年农业部"创建无公害农产品(种植业)示范基地县"的活动中,我们积极争取了栖霞项目县,项目建设中首先成立了以市长为组长的领导组织,加强技术培训和生产管理,制定并落实了"无公害苹果标准化生产技术规程"、"栖霞市无公害标准化生产技术规程"等一系列管理保障措施,同时加大抽样检测和执法

In order to provide a reference for the selection and breeding,exact evaluation and approvement of new wheat varieties,making use of the grey correlative degree analysis in regional trial from 2003～2004,the grain yield and 12 main characters of 11 new varieties of wheat were evaluated comprehensively.The results showed that the result of evaluation on the order of revelant grade was consistent with the actual performance of the varieties.The three better varieties were liangxing99,954(5)-4,taishan008.They were approved by Shandong Province Crop Cultivar Examination and Approval Committee in 2004,2005 and 2006,respectively.We consider that compare with equal weight correlation degree,the results of weighted correlation degree fit better with the fact of varieties.

面对国际经济一体化的新格局,特别是我国加入WTO后的新形势,农业和农村经济在迎来难得的发展机遇的同时,也遇到了前所未有的严峻挑战,面对新的机遇和挑战,为了保持农民增收、农业发展和农村稳定,当前和今后一个时期,要坚定不移地推进农业和农村经济结构的战略性调整.

0.13%康凯可湿性粉剂是德国马克普兰生物技术有限公司生产的新型植物生长调节剂,具有改善品质、增加产量的作用.2000年笔者分别在苹果树和梨树上进行了试验,现将结果总结如下.

随着经济的发展和消费者环保意识的提高，特别是我国加入WTO后所面临的与世界经济接轨问题，在我市大力发展优质无公害苹果生产，积极参与国内外市场竞争已成必然趋势。优质无公害苹果的一个重要指标，就是果品中有害物质的残留不超过国家规定的标准。造……

近几年来，套袋富士苹果的红点病一直困扰着我市的苹果生产。尤其是1998～2000年，连续3年的严重干旱，更加重了该病的发生。2000年红点病在栖霞的发生达到了高峰，最重园片病果率高达80％以上，全市平均发病率约在50％左右。重病果一个果实上有20～30处小红斑，严重影响了套袋果的外观质量和经济效益。2001年我市降雨量达到常年水平，红点病……

3.4%康凯可湿性粉剂是德国马克普兰生物技术有限公司生产的新型植物生长调节剂,具有改善品质,增加产量的作用.2000年笔者分别在苹果树和梨树上进行了试验研究,以验证其对果品产量和品质的影响.

Effect of different culture way (furrow in the field, furrow withplastic mulch, hole with plastic mulch and ridge with plastic mulch) on growth and yield of Clocasia escalenta Schott was studied with cultivar "Laiyang Guyu ". The results showed that the germinate time of the three culture ways with plastic mulch were significantly short than furrow in the field. It was no significantly among the three culture ways with plastic mulch. The rate of germinate of hole with plastic mulch was the highest. In earlier stage of growth, the leef area index of the three culture ways with plastic mulch were significantly high compered with furrow in the field. The leef area index of hole with plastic mulch and ridge with plastic mulch were higher in middle and later stage. The tuber yield of the three culture ways with plastic mulch were significantly higher compered with furrow in the field, The tuber yield of hole with plastic mulch was the highest.

1 植物转基因方法的研究进展 到目前为止,植物基因工程已经在很多方面有了深入的发展.包括:目的基因的分离克隆,基因工程的克隆载体[1],转基因方法的研究[2,3],基因转移的表达,转基因作物的利弊探析[4～8],分子标记的方法,分子标记在作物品种资源和遗传育种中的应用等[9～11]. 迄今为止,用于植物外源基因的导入方法和技术很多,这些方法在不同的植物类型和组织中有着不同的适用范围和优缺点.