共查询到20条相似文献，搜索用时 390 毫秒
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近年来由于效益农业的发展,促进了山区经济的发展.种植小麦显然效果欠佳,导致冬闲田面积逐年增加,为了解决这一问题,努力提高农田的种植效益,积极发展商品生产,增加优质农产品的上市量,繁荣城乡市场,丰富居民的"菜篮子".青田县在低海拔半山区,利用早春气温回升,劳力充足,交通方便等优势,积极引导农民调整种植业结构,增种高效益作物春马铃薯作蔬菜向温州等市场销售,山区改一熟为二熟,提高复种指数,增加农民收入取得了较好的效益.青田县自1999年开始推广一直到今共累计面积达1 750多hm2,达到极显著增产增收.马铃薯单季稻模式栽培,具有高产高效培肥土壤,降低病虫草害发生等优点,这种模式适合在浙西南海拔300 m以下地区种植. 相似文献
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浙南山区景宁畲族自治县近年来为了加快发展效益农业，充分发挥当地自然资源优势，种植结构不断调整优化，由水田延伸到旱地，2000年以来，全县在海拔600米以下地区的澄照、鹤溪、外舍、渤海、陈村等地累计推广种植“春马铃薯-甘薯 玉米-蔬菜”三熟四收的高效栽培模式88．4hm^2，取得 相似文献
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本文针对晋北春小麦单料生产效率低，面积下滑的实际，结合当地自然资源条件可利用的优势，阐述了春小麦套种春玉米，春玉米套种向日葵，春小麦复种大白菜和春玉米复种心里美萝卜等四种立体种植模式的内容，技术要点，经济效益和适宜地区。这对晋北盆地春麦区实施耕作改制和发展高产高效农业具有重要意义。 相似文献
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介绍了辽宁省以豌豆为前作的8种高效栽培模式的特点、种植规模及效益情况,为种植业结构调整及生产栽培提供科学指导,以便提高单位土地面积利用率,促进农民增产增收。 相似文献
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基于AMMI模型和GGE双标图对2018～2019年贵州春玉米11个品种、5个试点的产量数据进行丰产性和稳产性分析,评价试点的辨别力和代表性。结果表明,2018年中金玉838、新中玉801、先玉1171丰产性较好,靖单14、先玉1171和金玉838的稳产性较好;威宁、毕节试点的代表性较好,安顺、铜仁试点辨别力较强。2019年中金玉838、新中玉801、先玉1171丰产性较好,先玉1171和金玉838和兴玉3号的稳产性较好;安顺、兴仁试点的代表性较好,毕节、威宁辨别力较强。综合分析,金玉838的丰产性、稳产性均较强,综合表现最佳,威宁和毕节具有较高的试点辨别力和代表性。 相似文献
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辽宁省水稻品种苗期耐盐能力评价 总被引：2，自引：0，他引：2
对辽宁省29个水稻品种苗期150mmol/L NaCl水溶液处理条件下苗高、根长、根数、单株苗干重等指标进行分析,并对品种进行聚类.结果表明,盐丰47-8、辽盐282、辽粳371、辽盐12、桥201-2、辽盐241苗期耐盐能力较强,盐粳98、辽开79-3、沈农9418、铁粳4号、辽2096、沈农9741、盐粳34、铁粳... 相似文献
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Maria Filomena de Jesus Raposo Alcina Maria Miranda Bernardo de Morais Rui Manuel Santos Costa de Morais 《Marine drugs》2016,14(2)
In recent years, scientists have become aware that human microbiota, in general, and gut microbiota, in particular, play a major role in human health and diseases, such as obesity and diabetes, among others. A large number of evidence has come to light regarding the beneficial effects, either for the host or the gut microbiota, of some foods and food ingredients or biochemical compounds. Among these, the most promising seem to be polysaccharides (PS) or their derivatives, and they include the dietary fibers. Some of these PS can be found in seaweeds and microalgae, some being soluble fibers, such as alginates, fucoidans, carrageenans and exopolysaccharides, that are not fermented, at least not completely, by colonic microbiota. This review gives an overview of the importance of the dietary fibers, as well as the benefits of prebiotics, to human health. The potential of the PS from marine macro- and microalgae to act as prebiotics is discussed, and the different techniques to obtain oligosaccharides from PS are presented. The mechanisms of the benefits of fiber, in general, and the types and benefits of algal fibers in human health are highlighted. The findings of some recent studies that present the potential effects of prebiotics on animal models of algal biomass and their extracts, as well as oligo- and polysaccharides, are presented. In the future, the possibility of using prebiotics to modulate the microbiome, and, consequently, prevent certain human diseases is foreseen. 相似文献
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研究了我国主要农家玉米品种的生育期、主茎叶数、株高、茎粗、穗位、穗长、穗粗、穗行数、行粒数、穗粒重、千粒重及出籽率12个数量性状的变异情况,并对其株型、穗型、穗轴颜色、子粒类型及子粒颜色5个质量性状变异进行了简要分析.我国农家玉米品种数量性状的变幅较大,特别是株高、穗粒重和穗位等性状.同时,农家品种也具有它们独特的优异性状,对于育种材料改良有着重要意义。 相似文献
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Andrey B. Imbs Ekaterina V. Ermolenko Valeria P. Grigorchuk Tatiana V. Sikorskaya Peter V. Velansky 《Marine drugs》2021,19(12)
Marine invertebrates are a paraphyletic group that comprises more than 90% of all marine animal species. Lipids form the structural basis of cell membranes, are utilized as an energy reserve by all marine invertebrates, and are, therefore, considered important indicators of their ecology and biochemistry. The nutritional value of commercial invertebrates directly depends on their lipid composition. The lipid classes and fatty acids of marine invertebrates have been studied in detail, but data on their lipidomes (the profiles of all lipid molecules) remain very limited. To date, lipidomes or their parts are known only for a few species of mollusks, coral polyps, ascidians, jellyfish, sea anemones, sponges, sea stars, sea urchins, sea cucumbers, crabs, copepods, shrimp, and squid. This paper reviews various features of the lipid molecular species of these animals. The results of the application of the lipidomic approach in ecology, embryology, physiology, lipid biosynthesis, and in studies on the nutritional value of marine invertebrates are also discussed. The possible applications of lipidomics in the study of marine invertebrates are considered. 相似文献