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由于一些客观原因,马铃薯在种植过程中经常发生病虫害,给农民造成了巨大的经济损失,而且威胁到了国家的粮食生产安全,关乎到农业经济基础的地位。北方作为马铃薯的主要产地,种植面积广大,病虫害的防治尤为重要。就北方马铃薯病虫害的防控技术进行研究分析,以减少病虫害对马铃薯的为害,提高马铃薯的产量和质量。 相似文献
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玉米是我国的一种主要粮食作物,其营养价值较高,分布范围较广,当前玉米种植面积不断增加。玉米市场需求量大,种植人员有必要提升种植产量,关注影响玉米高产的因素,如病虫害等。基于此,阐述了绿色防控技术在玉米病虫害综合防治领域的重要作用,分析了玉米常见病虫害种类,以供相关人员参考。 相似文献
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马铃薯的脂肪含量与碳水化合物含量低、饱腹感强,有利于人体健康,广受消费者的青睐。为了保证马铃薯的质量和产量,满足消费者的需求,种植马铃薯时应选用科学的栽培技术,加强马铃薯的病虫害防控。文章分析了马铃薯栽培技术的要点,总结了马铃薯病虫害防治方法,以期提升马铃薯的质量与产量。 相似文献
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作为我国四大粮食作物之一,马铃薯在日常生活中扮演者重要的角色。马铃薯是环县种植的主要农作物之一,对当地人民的生活有着重要影响。对于马铃薯的种植来说,首先是产量较高,其次是用途较为广泛。在西北部地区,马铃薯对于环境的适应能力相对较强,很多地方的农民喜欢种植马铃薯。由于马铃薯种植历史悠久,其种类和品种也面临着退化,尤其是自然灾害的威胁,更使病虫害的影响加剧。对马铃薯的高产种植技术进行分析,对于提高环县的马铃薯产量具有重要意义。 相似文献
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近年来,马铃薯晚疫病在我国西南东部、华北北部、东北北部和西北大部都有发生,早疫病、黑胫病、病毒病及其他土传病害、地下害虫等病虫害发生面积有所增加。为了有效控制马铃薯病虫为害,针对我国不同种植区域病虫害发生特点和趋势,采取分区防控技术,力争将马铃薯病虫为害损失控制在一定范围内,保证马铃薯生产经济效益和产品安全。 相似文献
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甘肃中东部雨养梯田马铃薯绿色高效栽培技术 总被引：2，自引：0，他引：2
马铃薯是一种粮菜饲兼用作物和工业原料,已确立为第四大主粮作物。甘肃中东部雨养梯田地干旱瘠薄,广泛种植马铃薯。结合该区域特点、试验数据及相关研究成果,从适合该区域的马铃薯品种、种薯处理、栽培模式、田间管理、病虫害防控和收获贮藏方面,系统综述了甘肃中东部雨养梯田马铃薯绿色高效栽培技术要点。 相似文献
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莫曾梅 《农产品加工．学刊》2019,(7):78-80
随着生活水平的提高,果蔬产品成为人们摄取营养元素的重要食品之一。分析了我国果蔬采后存在的问题,并对低温及气调保鲜、化学保鲜剂、涂膜保鲜技术及超声保鲜技术等贮藏保鲜技术研究进行了综述,指出我国果蔬贮藏保鲜技术持续、稳定、健康的发展要倚重于科技创新。 相似文献
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Oil and protein crops are of growing importance in cropping systems. This study was carried out to compare oil crops of linseed, rapeseed, sunflower and protein crops of faba bean and white lupin for grain production, residual plant dry matter and nitrogen. Two field experiments with either oil or protein crops were conducted in 1993 and 1994, respectively. Total dry matter production, grain yield, residues, N concentrations and mineral N in the soil were measured. Dry matter production and distribution as well as N uptake and residues varied greatly among species and between years. In 1993, oil crops gave up to 3 t ha−1 grain and 16 t ha−1 residues with sunflower, while in 1994 up to 5 and 11 t ha−1, respectively, were recorded with winter rape. Protein crops showed an opposite reaction in years. Nitrogen uptake and residual N amounts were correlated with dry matter production. Plant residues of oil crops contained 20–140 kg N ha−1; those of protein crops up to 80 kg N ha−1. Despite the variation of residual plant N the variability of mineral N in the soil at harvest was hardly influenced by crops and amounted to only 20–50 kg NO−3-N ha−1. 相似文献
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我国蔬菜产业和科学技术的发展与展望 总被引：1，自引：0，他引：1
1 我国蔬菜产业的发展现状蔬菜是人们日常生活中不可缺少的副食品,也是我国目前种植业中最具活力的经济作物。改革开放以来,随着市场经济的发展,农产品产销体制的不断改革和完善,特别是1988年实施“菜篮子工程”以来,蔬菜产业得到了蓬勃发展。1.1 播种面积1987~1999年,全国蔬菜播种面积由533.3万hm2,发展到1333.3万hm2,增长139.5%。1.2 总产量1987~1999年,全国蔬菜总产量由1.55亿t增加到4.05亿t,增长161.3%,使年人均鲜菜占有量达到330.7kg(世界各国人均105kg…… 相似文献
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以Y05-222A和Y06-136R杂交得到的135株F2群体为研究材料,测定过氧化物酶（POD）、超氧化物歧化酶（SOD）、脯氨酸（Pro）、过氧化氢酶（CAT）、可溶性蛋白和丙二醛（MDA）等6个生理指标,并进行方差分析、相关性分析和通径分析,对F2群体进行偏度及峰度分析。结果显示,以上6个生理指标在F2群体中P>0.05,分布频率符合正态分布,同时存在双向超亲分离现象;相关性分析和通径分析显示,这些指标与抗盐碱系数均呈极显著相关（正相关或负相关）,且相关系数与总间接通径系数方向一致。POD活性的直接通径系数为0.5003,可见POD直接影响抗盐碱性;CAT活性和Pro含量的直接通径系数分别为-0.1317和-0.0384,间接影响抗盐碱性;SOD活性、MDA及可溶性蛋白含量直接或间接影响抗盐碱性。POD、SOD、Pro、CAT、可溶性蛋白和MDA各生理指标的抗盐碱作用表现为POD>CAT>Pro>可溶性蛋白>MDA>SOD。叶片数、株高、茎粗和盘径与抗盐碱系数呈极显著正相关,其相关性表现为叶片数>盘径>株高>茎粗。以上结果可为研究油用向日葵抗盐碱性提供一定的理论基础。 相似文献
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LI Zhi-liang~ 《保鲜与加工》2004,(7):82-85
Some novel concepts of chemomics/molomics are proposed including hydrocarbomics, alcophenomics, carboxomics, pepitomics, metabonomics, etc. like genomics, protomics and glycomics in bioomics. Some examples are given to demonstrate the chemomics and/or molomics methodology and technology based chemoinformatics and bioinformatics and their wide applications in Chemistry and Biology. 相似文献
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《Journal of Landscape Research》2013,(Z1)
Definition of Fengshui and the theories of selecting mountain and water environment in Fengshui were elaborated. Theories about mountain-water relationship were expounded from the perspective of piling of rockeries and layout of water, a residential area in Hefei City, Beijing Olympics Park, Hangzhou Prince Bay Park, mineral pit of Shanghai Chenshan Botanic Garden, Beijing Beihai Park, Shanghai Changfeng Park were taken for example to demonstrate the influence of traditional rockery and mountain layout in Fengshui on modern landscape design. 相似文献
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果蔬食品的褐变与控制 总被引：9，自引：0，他引：9
结合生产实际,对果蔬食品产生褐变的机理及其控制途径进行探讨。通过遗传学途径,培育果蔬新品种,使之不含易氧化变色物质,增强其天然抗褐变性,是控制果蔬褐变的根本途径。 相似文献
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Acidity and sweetness in apple and pear 总被引：2，自引：0，他引：2
Summary Sweetness and acidity in apple and pear inherit independently and can be organoleptically evaluated separately, but less accurately in pear than in apple. For breeding purposes an analysis of fruits for acidity and sweetness with pH indicator paper and a hand refractometer is to be prefered to the organoleptic method.In apple, the acidity-decreasing with time-of the unripe fruit was already strongly indicative of that of the eating-ripe fruit; sugar-increasing with time-not before the fruit was picking ripe. Sugar content in apple and pear, and the pH in pear, appeared to be normally distributed; the pH in apple showed a segregation into an acid and a low-acid group, which occurred in both the unripe and ripe stage. The segregation ratio between these groups was found to be highly variable. On the whole, the mean acidity and sugar content of apple and pear progenies is significantly determined by that of the parents. Most of the observations made did not support the theory that low acidity in apple is determined by one recessive gene. The relationship between the pH of leaf juice and fruit juice in apple may offer a possibility for pre-selection. 相似文献