关于优质专用玉米发展前景的思考

玉米是山东省第二大粮食作物和第一大饲料作物 ,在农业生产中占有举足轻重的地位。随着社会的发展 ,人民生活水平的提高和饮食结构的变化 ,优质专用玉米发展较快 ,并将成为山东省玉米生产与开发的重要组成部分。1　山东优质专用玉米研究开发现状优质专用玉米包括糯玉米、甜玉米、爆玉米、笋玉米、高油玉米、高赖氨酸玉米和青饲玉米等。山东省自70年代就开始了优质专用玉米的选育工作 ,烟台市农科所育成了我国第一个高产白粒糯玉米单交种烟单 5号 ,产量比地方农家品种增产 50 %以上。到“七五”末 ,鲁糯玉 1号、鲁甜玉 1号和 2号、泰爆玉 1号…     

发展专用青贮饲用玉米生产中存在的问题与对策

优质专用玉米是指具有优良品质和专门用途的玉米.青饲玉米一般是指用鲜嫩的玉米茎叶、果实做饲料的玉米.其特点是生长迅速,在短时间内可以获得较多的茎叶、果实产量.青贮玉米是在乳熟后期将玉米的地上部分收割、切碎并贮藏于青贮窖或青贮塔中,可以长时间用做奶牛和肉牛饲料.近年来,优质专用青贮玉米生产发展较快,专用青贮玉米品种的选育、栽培技术研究等都取得了较大进展,部分地区尝试了专用青贮玉米的订单生产,取得了初步成效.但在发展优质专用青贮玉米生产中仍存在一些不足,与产业化经营不相适应,有待改进与完善.     

发展优质青贮饲用玉米生产存在的问题与对策

<正>近年来优质专用青贮玉米生产发展较快,专用青贮玉米品种的选育、栽培技术的研究等都取得了较大进展,部分地区尝试了专用青贮玉米的订单生产,取得了初步成效。但在发展优质专用青贮玉米生产中仍存在一些不足,与产业化经营不相适应,有待改进与完善。     

浅谈优质专用玉米及其发展前景

分析了优质高油玉米、高蛋白玉米、高淀粉玉米、青饲玉米、鲜食玉米、爆裂玉米的特点和用途,指出发展优质专用玉米可满足食物消费、饲料消费、特殊工业原料、种植业结构调整及产业化开发的需求.     

专用玉米品种类型及其栽培技术要点

<正>专用玉米是根据不同需要培育出的适合特殊用途的玉米品种,具有专用性、优质性、高效性等特点,在国内外具有广阔的市场前景。1专用玉米品种类型目前,国内推广的专用玉米品种,主要分为以下八大类型,分别为甜玉米、糯玉米、高油玉米、高蛋白玉米(高赖氨酸玉米)、高淀粉玉米、笋用玉米、饲用玉米和爆裂玉米。     

宝鸡市优质专用玉米发展现状及途径分析

玉米是我国第二大粮食作物,在农业生产中具有举足轻重的作用。优质专用玉米是其中一些具有特殊用途的玉米品种,例如甜玉米、糯玉米、饲料玉米和青贮玉米等,由于其特殊性和专用性,具有很高的营养价值和市场开发潜力。近年来,宝鸡市畜牧养殖业发展迅速,玉米的产量和饲料品质直接影响到畜牧养殖业的发展;同时由于膳食结构的改善,高品质的鲜食玉米成为消费的亮点,其市场潜力较大。因此发展优质专用玉米,提高玉米产品的附加值,充分发挥玉米的经济优势和市场潜力,对促进宝鸡市农业增效和农民持续增收具有重要意义。     

优质专用花生生产现状及产业化发展对策

优质专用花生生产是为了应对我国加入WTO后,国际、国内日趋激烈的花生市场竞争而发展起来的新型花生产业.它包括优质专用花生新品种的选育与推广,优质专用花生的区域化布局与基地建设,优质专用花生的加工与出口等.商丘是花生生产大市,近年来,为了提高花生产品的市场竞争力,满足人民生活水平提高的需要,商丘市加快了优质专用花生的发展,花生科研和生产逐步由单纯追求产量向优质、专用、无公害、无污染的方向发展,花生产业将成为21世纪初商丘市农村经济增长的支柱产业.     

基因型和环境对玉米籽粒粗蛋白及赖氨酸含量的影响

以河南省生产上主要推广的15个玉米品种为材料,于2004-2005年在8个不同的环境条件下进行了2年多点试验,研究基因型和环境对玉米粗蛋白和赖氨酸含量的影响。结果表明:基因型、环境以及基因型与环境的互作效应对玉米粗蛋白和赖氨酸含量均有显著影响,独立效应大于互作效应,在独立效应中,基因型效应大于环境效应;HE-1、HE-2、豫单101和豫单2002粗蛋白含量高于11%,赖氨酸含量高于0.35%,是较理想的高蛋白、高赖氨酸优质专用的玉米品种;郑州、南阳和洛阳比较适宜种植高蛋白、高赖氨酸优质专用玉米。     

青岛市优质专用玉米生产现状与展望

通过对青岛市优质专用玉米生产、研究、开发现状及未来消费需求变化趋势的分析,认为青岛市优质专用玉米进行产业化开发是很有潜力的,并提出了相应的对策与建议……     

五千亩杂交玉米高产示范工程项目成效显著

玉米是遵义市的主要粮食作物之一 ,常年种植面积 15 .33万ｈｍ2 左右 ,总产 70～ 80万ｔ ,面积产量仅次于水稻 ,玉米产量占全市粮食作物总产量的 30 %以上 ,为了进一步加快遵义市农业结构调整进程 ,认真抓好优质玉米生产的发展 ,提高玉米单位面积产量和经济效益 ,确保农民增加收入及其全市粮食总产量的持续稳定增长。 2 0 0 1年在贵州省农业厅的统一安排部署下 ,市农技站参与了在全省组织实施的 33.33万ｈｍ2 优质杂交玉米粮食高产示范工程项目 ,承担了 333.33ｈｍ2优质杂交玉米粮食高产示范工程。项目在各级政府、农业局领导的高度重视及其…     

A rapid method for screening barley for aluminium tolerance

Summary A method for rapid screening of large numbers of barley genotypes for aluminium tolerance is described, and the results of a small scale screening of composite cross CC XXX-C given.     

农业植物品种权申请前的准备

一项能够取得品种权的植物新品种,必须同时具备以下几个条件:属于国家植物新品种保护名录范围;不违反国家法律、妨害公共利益或者破坏生态环境;必须具备新颖性、特异性、一致性和稳定性;应当具备适当的品种名称.另外,品种权是不能自动取得的,即使合乎授权条件的植物新品种,也必须履行<中华人民共和国植物新品种保护条例>(以下简称<条例>)和<中华人民共和国植物新品种保护条例实施细则>(以下简称<实施细则>)所规定的品种权申请程序.为了减少品种权申请的盲目性,节省品种权申请人和植物新品种保护办公室双方的人力、物力和财力,品种权申请人在提出申请以前一定要做好以下准备工作.     

Nitrogen response models for winter cereals grown for forage

Forage double cropping can increase production, reduce erosion risk and improve soil health. Farmer experience in the north‐eastern USA shows that winter cereals can, in 3–4 weeks (Feekes 9 harvest), produce high quality forage given sufficient N at dormancy break. Here, we evaluate crop response models to determine the most economic rate of N (MERN) for forage winter cereals. Sixty‐three on‐farm N‐rate trials (0, 34, 67, 101, 135 kg N/ha) were conducted in New York from 2013 to 2016. Trials were divided into four categories: (a) no yield response to N (group 1; 20 trials); (b) yield plateau exceeded the highest N rate (group 2; one trial); (c) the MERN was below the lowest N rate (group 3; seven trials) and (d) all other N‐responsive trials (group 4; 35 trials). For group 4, three statistical models were compared (quadratic plateau, exponential and square root plateau). Statistical, environmental and economic criteria showed that the quadratic plateau fits the data best and had the most stable predictions across scenarios. The four‐category analysis is effective in determining MERNs of individual trials, and the quadratic plateau is best for determining forage winter cereal MERNs and yields at MERNs for individual trials in the north‐eastern USA.     

Method for screening bread wheat for tolerance to boron

A new method for screening wheat for boron tolerance has been developed to overcome the problems of methods used in the past. Seedlings were grown for 10 days while suspended over B-rich solutions. Their root lengths were then measured as an index of tolerance. Five varieties of wheat were screened at seven concentrations of B. Results were obtained more quickly and easily than from the alternative methodologies and compared favourably. Screening of 128 doubled haploid lines from a cross between Halberd and (Wl*MMC) suggested that transgressive segregation had occurred. This revised version was published online in August 2006 with corrections to the Cover Date.     

Contracting for Migration for the Reason of Zoological Environment

Migration for the reason of zoological environment is the measure for solving the crisis of zoological environment. Nowadays, governments play the chief role in the Migration for the reason of zoological environment, but the migration themselves do not have the freedom to decide whether migrate or not. Because the activity of migration is related to the restraint of economy, culture, law, etc. It is the object of migration that protect the zoological environment and improve the welfare of habitant, which must be concerned when constructing the systems of migration. This paper proves the possibility of contracting for migration based on the methodology of the cost-income analysis. On the other hand, it also argues for changing the mode of migration from that controlled by governments to being decided by habitant themselves.     

A Composite Index for Statistical Inference for Ranking Metropolitan Areas

ABSTRACT The construction of a composite index is described to rank U.S. metropolitan areas for educational attainment. The suggested methodology departs from traditional rank sum methods in that this approach utilizes data resulting in a continuous scale, whereas in the rank sum method, no use is made of the actual values of the data, but merely their rankings. The proposed index circumvents several practical problems because the numbers generated are metric measures allowing the use of arithmetic and statistical operations. Data used are pupil/teacher ratio, an effort index, and academic options in higher education. Comparisons are made across areas by population size and by geographic region.     

玉米制种缺素症（营养障碍）的防治

1　症状1.1　缺氮 :幼苗矮化 ,瘦弱 ,叶丛黄绿。生长株从叶尖开始变黄 ,沿叶片中脉发展 ,叶片上形成一个“V”形黄化部分 ,致全株黄化 ,后下部叶尖枯死且边缘呈黄绿色。缺氮严重或关键期缺氮 ,果穗小 ,顶部籽粒不充实 ,蛋白质含量低。1.2　缺磷 :嫩株敏感 ,植株矮化 ,叶尖、叶缘失绿呈紫红色 ,后叶端枯死或变成暗紫褐色。根系发达 ,雌穗受粉受阻 ,籽粒不充实 ,果穗少或歪曲。1.3　缺钾 :下部叶片的叶尖、叶缘呈黄色或似火红焦枯 ,后期植株易倒状 ,果穗小 ,顶部发育不良。1.4　缺钙 :植株矮 ,新叶生长受阻 ,新叶尖端几乎完全失绿 ,分泌透明…     

A General Method for the Initial Values for Two-Sided Iteration

In the study on finding a group of inital values for solving operator equation x=G(x)by the two-sided iterative method,some stronger conditions forG(x)have been demandedand some new parameters have to be introduced since 1978,But,as it will be proved in this paper,Itis unnecessary to use any new parameters and other stronger conditions to get a group of initial val-ues of two-sided iterative, as those initial values can be obtained by means of an auxiliary iterativebeginning with operator G(x)itself. The numerical example in this paper illustraves that the methodproposed in this paper is a general method.     

Assessment of techniques for screening alfalfa cultivars for aluminum tolerance

Screening toxicity tests are an effective method to characterize aluminum tolerant plants. In this paper, three screening procedures were used to assess aluminum tolerance among 13 cultivars of alfalfa (Medicago sativa L.). The procedures used were: Petri dish screening, black glass plot method and the soil-on-agar procedure. Major biological indices used to analyze aluminum tolerance were relative root length (RRL), relative germination rate (RGR), relative hypocotyl length (RHL), relative fresh weight (RFW) and root emergence (RE). Aluminum negatively affected all five indices. A Pearson correlation test indicated that the results of the three screening procedures were consistent, suggesting that all three could be used for screening purposes. However, because of the short test period and the simplicity of operation, the black glass plot method might be the best choice. Overall, cv. Super No. 7 and WL-525HQ were the most aluminum-tolerant alfalfa cultivars, while Pondus S was the most sensitive.