共查询到20条相似文献，搜索用时 78 毫秒
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麦棉套种4—2式是目前推广面积较大的种植模式,它具有麦棉矛盾小、有利于棉花壮苗早发的优点。但4—2式预留棉行空挡较大,浪费了小麦播种至棉花播种期间的光能及土地资源。为此,近年来我们试验示范了小麦、蒜苗、棉花和小麦、甘蓝、棉花两种间套模式,取得了较好的经济效益。两种栽培模式一般每公顷产小麦6000kg,蒜苗1.5万公斤或甘蓝2.25万～3.0万公斤,皮棉1200kg。每公顷总产值近4.5万元。现将小麦、甘蓝、棉花高效间套栽培技术介绍如下。1 种植方式采用麦棉套种4—2式,1.6m一带,种4行小麦,占地60cm,预留棉行占地100cm,小麦播种前按此规格… 相似文献
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脱毒马铃薯与棉花间作套种是我区棉农通过试验、示范总结出的一种新型套种模式。 1 997年示范 ,1 998年开始大面积推广应用 ,1 999年推广面积3 5 0公顷 ,平均每公顷产马铃薯 3万公斤 ,皮棉1 3 3 5 kg公斤 ,公顷纯收入 2 .85万元。 2 0 0 0年面积发展到 80 0公顷。这种套种模式一般公顷产马铃薯2 .7万～ 3 .3万公斤 ,产皮棉 1 2 75～ 1 3 5 0 kg,公顷纯收入 2 .4万～ 2 .7万元。1脱毒马铃薯与棉花间作套种好处马铃薯采用早春地膜栽培 ,早种 ,早收 ,产量高 ,价格好 ,且耐贮藏、运输 ,市场稳定 ,效益好 ;马铃薯、棉花套种田间操作技术简便 ,省… 相似文献
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曾连续多年夺得全国棉花单产桂冠的新疆兵团农一师三团 ,今年种植的 7333公顷棉花公顷皮棉产量达 2 1 0 0公斤 ,再次创造了棉花大面积高产的奇迹。新疆三团棉花产量每公顷突破2100公斤@王建强$农一师三团宣传科!843011
@吴应春$农一师三团宣传科!843011 相似文献
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近几年来 ,江苏省南通兴起的小麦、青蒜、西瓜、棉花复合套作模式 ,使四种作物都获得了高产 ,是经济效益较为显著的一种种植模式。一般每公顷产小麦 375 0～ 4 5 0 0ｋｇ ,青蒜 30 0 0 0～ 375 0 0ｋｇ ,西瓜 30 0 0 0～ 330 0 0ｋｇ ,棉花 12 0 0～ 135 0ｋｇ ,总产值 5 2 5～ 5 5 5万元 ,纯收入达 4 2～ 4 5万元。1 种植规格4ｍ为一种植带 ,秋播时 ,其中 2 5 3ｍ内播种 3行小麦 ,麦幅 0 4 7ｍ ,空幅 0 5 6ｍ ;在 1 4 7ｍ内种青蒜 ,4月中下旬青蒜上市后 ,移栽西瓜 ,穴距 0 6 7ｍ ,每穴 2株 ,5月中旬在西瓜两侧 0 5ｍ处与小麦每个… 相似文献
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襄樊市地处鄂北岗地 ,棉花收入一直是农村经济的重要支柱。近年来 ,随着棉价的持续下跌 ,植棉效益呈下降趋势。推广棉田间作套种 ,可充分利用温光地理资源 ,实现棉田多熟高效。通过几年来的探索与实践 ,襄樊市已逐步形成了几种具有当地特色的规范化种植模式。1 小麦—萝卜—棉花—绿豆厢宽 2 m(带沟 0 .33m) ,左边一幅小麦 0 .73m,右边预留行 0 .93m。与小麦同期播种萝卜 ,品种选用 4月白 ,每公顷3.5万株。萝卜收获后 ,5月上旬移栽棉花 ,每公顷 3万株。小麦收获后点种绿豆。一般公顷产小麦 30 0 0 kg,产值 2 70 0元 ;萝卜 2 .6万公斤 ,产值… 相似文献
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油葵是一种新型油料作物 ,具有丰产、抗逆、油品质量好、经济效益高等优良特性 ,在我国起步虽晚 ,但发展速度快 ,目前 ,油葵已经与油菜、花生、芝麻、胡麻组成我国五大油料作物。油葵生育期短 ,适应性强 ,适用于多种种植方式。棉花苗期叶面积系数小 ,且持续时间长 ,油葵棉花套种 ,一地多用 ,有效利用早春到初夏的光热资源 ,为了探索油葵棉花套作对产量、品质效益的影响 ,2 0 0 0年进行了油葵棉花套作试验。1材料和方法试验于 2 0 0 0年在中棉所试验地进行 ;试验地土壤为壤土 ,种植方式为一熟种植和两熟麦棉套种、油葵棉花套种 ;两熟配置方式… 相似文献
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鲁西平原的腹地聊城地区，每年麦套棉面积100万亩以上，但是由于套种方式不当，小麦单产徘徊在每公顷3000—3750公斤，棉花1050公斤。近几年来，将麦棉套种种植模式改为三二式后麦棉获得双高产，折合每公顷小麦4500公斤，棉花1350公斤，比露地棉花每公顷增产271．5公斤。1百二式支棉套种的好处1．l有利于两晚变两早过去的麦棉塞由于棉花晚播晚发晚熟，导致小麦播斯推迟．形成麦晚棉也晚。三二式套种较好地解决了两晚问题，棉花可提前播种25—30天，小麦可能提前播种10—15天。1．2有利于发挥边行优势三二式麦棉套种，其共生期相对缩短，能避… 相似文献
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美国有 1 7个州种植棉花 ,2 0 0 0年的播种面积6 2 2万公顷 ,陆地棉每公顷产量 6 1 2公斤 ,总产量3 70万吨 ;长绒棉每公顷产量 1 1 44公斤 ,总产量近9万吨 ,总计 3 79万吨。 2 0 0 1年 6 3 4万公顷 ,较上年为增长趋势。2 0 0 1年美国棉花带年会主题1月 9～ 1 3日在加州召开。主题是“机遇 ,进步 ,希望”,目的是“解决作物管理中的问题”,侧重解决农艺栽培、环保式耕作、综合害虫治理、水土保持、作物群体管理 ,以及 Bt棉的抗性管理等过程中的问题。2001年美国棉花播种面积增加@王淑民… 相似文献
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概述了海峡两岸农业交流与合作的现状,提出了应该共同呼吁尽快实现两岸“三通”,开放农业生物技术图书期刊资料交流以及开放生物学科方面网络的思路,以便为农业交流与合作的顺畅开展打好基础,并寄希望能够就糖蔗、果蔗以及甘蔗笋等方面的研究与开发到台湾学习取经,开展学术交流或与台湾同行共同开展研究,为我省甘蔗业的发展作出贡献。 相似文献
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《Journal of Cereal Science》2007,45(3):236-251
Sorghum is a good source of phenolic compounds with a variety of genetically dependent types and levels including phenolic acids, flavonoids, and condensed tannins. Most sorghums do not contain condensed tannins, but all contain phenolic acids. Pigmented sorghums contain unique anthocyanins that could be potential food colorants. Some sorghums have a prominent pigmented testa that contains condensed tannins composed of flavan-3-ols with variable length. Flavan-3-ols of up to 8–10 units have been separated and quantitatively analyzed. These tannin sorghums are excellent antioxidants, which slow hydrolysis in foods, produce naturally dark-colored products and increase the dietary fiber levels of food products. Sorghums have high concentration of 3-deoxyanthocyanins (i.e. luteolinidin and apigenidin) that give stable pigments at high pH. Pigmented and tannin sorghum varieties have high antioxidant levels that are comparable to fruits and vegetables. Finger millet has tannins in some varieties that contain a red testa. There are limited data on the phenolic compounds in millets; only phenolic acids and flavones have been identified. 相似文献
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Sorghum and millet phenols and antioxidants 总被引：5，自引：2，他引：5
Sorghum is a good source of phenolic compounds with a variety of genetically dependent types and levels including phenolic acids, flavonoids, and condensed tannins. Most sorghums do not contain condensed tannins, but all contain phenolic acids. Pigmented sorghums contain unique anthocyanins that could be potential food colorants. Some sorghums have a prominent pigmented testa that contains condensed tannins composed of flavan-3-ols with variable length. Flavan-3-ols of up to 8–10 units have been separated and quantitatively analyzed. These tannin sorghums are excellent antioxidants, which slow hydrolysis in foods, produce naturally dark-colored products and increase the dietary fiber levels of food products. Sorghums have high concentration of 3-deoxyanthocyanins (i.e. luteolinidin and apigenidin) that give stable pigments at high pH. Pigmented and tannin sorghum varieties have high antioxidant levels that are comparable to fruits and vegetables. Finger millet has tannins in some varieties that contain a red testa. There are limited data on the phenolic compounds in millets; only phenolic acids and flavones have been identified. 相似文献
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Summary Between 1993 and 1998 205 different potato cultivars and 1220 accessions/genotypes of wild and cultivated potato species from
the IPK Genebank Gatersleben were evaluated. Parameters interesting for starch isolation and especially for the use of starch
were determined. Altogether, there was a higher variability in wild potato species than in cultivated potatoes for all characteristics
investigated: dry matter content, starch content, protein content, amylose content and mean particle diameter of starch granules. 相似文献
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近年来，随着大豆播种面积的增长，受病虫危害日趋严重。特别是大豆根潜蝇（又名根明）与根腐病共同发生危害，严重影响大豆的生产。综合防治技术主要手段是三年以上轮作，适时播种及种衣剂拌种等措施。 相似文献
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In field experiments conducted over 2 years in Mediterranean conditions, five winter and five spring triticales were evaluated for forage and grain production in the same cropping season. The experiments had two treatments, namely harvesting for grain only, and dual-purpose forage and grain production. In the latter treatment, forage was cut when the first node was detectable (Zadoks' stage 31), without removing the apical meristems. Grain was harvested when ripe (Zadoks' stage 92) in both cut and uncut plots.
Environmental conditions affected grain production and protein content more than forage yield and quality. Winter triticales yielded about 43% more forage than spring types, but after forage removal the spring types yielded about 36% more grain than winter triticales.
Reductions in grain yield after clipping were more pronounced in winter (32%) than in spring (19%) types. Forage crude protein content was significantly higher in the spring types studied (24.6%) than in the winter types (23.5%), the opposite being true for fibre content (20.7 and 21.6% respectively). Grain crude protein content did not differ between grain and dual-purpose treatments, but was higher in the spring triticales (12.8%) than in the winter types (11.9%). There was more variability for the measured traits within the winter triticales studied than within the spring types. 相似文献
Environmental conditions affected grain production and protein content more than forage yield and quality. Winter triticales yielded about 43% more forage than spring types, but after forage removal the spring types yielded about 36% more grain than winter triticales.
Reductions in grain yield after clipping were more pronounced in winter (32%) than in spring (19%) types. Forage crude protein content was significantly higher in the spring types studied (24.6%) than in the winter types (23.5%), the opposite being true for fibre content (20.7 and 21.6% respectively). Grain crude protein content did not differ between grain and dual-purpose treatments, but was higher in the spring triticales (12.8%) than in the winter types (11.9%). There was more variability for the measured traits within the winter triticales studied than within the spring types. 相似文献
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种子加工、检验理论与技术现状及思考 总被引：3，自引：0，他引：3
种子加工及检验是种子向市场流通的关键，是商业化育种中赋予种子商品属性不可或缺的环节。种子加工、检验理论与技术的研究是完善种业产业链、实现规模化商业育种、夯实“育繁推一体化”种业科学的重要一环。中国的种业科学技术体系正在形成与完善之中，受制于行业发展水平，种子加工及检验理论与技术相对薄弱。本文回顾了种子加工及检验理论与技术研究发展历程，提出了完善中国种业科学发展的策略与建议。围绕种业发展的需要，在做好品种优质化繁育的基础上，分析种子加工及检验理论与技术的新方向和新需求，加强种业应用性研究，建立先进的种子质量检验体系，研制适合现代种业发展需求的种子加工设备，打造种子加工产业标准化生产体系，完善种业科学技术学科建设，促进种业产业持续健康发展。 相似文献
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《Journal of Crop Improvement》2013,27(1):313-324
Summary Arbuscular mycorrhizae were inoculated into phosphorus-deficient soil fertilized with either organic or chemical fertilizer with cucumber (Cucumis sativus L.) as the first crop and lettuce (Lactu-ca sativa L.) as the second crop but without additional fertilization and AM inoculation. AM increased dry matter and fruit yield of cucumber significantly in the unfertilized, organic-fertilized and P-deficient plants compared with the fully chemical-fertilized plants. AM inoculation increased the available phosphorus in plant and soil by around 30% for all treatments except for those chemically-fertilized. The rate of AM infection did not differ significantly among the fertilization treatments, but the infection intensity was higher in unfertilized, organic-fertilized and phosphorus-deficient treatments than chemical-fertilized treatment. The residual effects of AM-inoculated to cucumber were evident for lettuce in all pre-treatments that were unfertilized and un-inoculated for the second cropping. Without P-fertilization, neither crop could grow optimally even when the soil was inoculated with AM, suggesting that AM could not serve as a substitute for phosphorus fertilizer. However, the other beneficial effects of AM on crop growth and yield could not be fulfilled with phosphorus fertilizer. 相似文献