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近年来,国家粮食直补资金增长较快,“三农”状况有所改善。对国家粮食直补资金的效果和存在问题进行对比分析后得出一个令人不太满意的结论:国家粮食直补资金的使用是有效的,但非常有限。用供给经济学术语来讲,是低效率的。国家有关部门应该引起重视,并采取有效措施。 相似文献
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<正>粮食产量十一连增、农民收入增长十一连快,成为过去一年三农领域的新成就。人们期待这个句式在2015年继续使用,并成为常态。这个期待符合一般认识。三农问题作为全党工作的重中之重被反复、持续强调,连续12年中央1号文件都涉农,这种重视程度已超过历史上任何时期。种田不交税,还拿补贴,而且不断有新的补贴项目产生,粮食生产的积极性被激发出来。尤其是对种粮大户的补贴和奖 相似文献
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高粱是中国第五大粮食作物,是典型的耐旱、耐盐碱作物,是中国主要适合的酿造作物。江苏酒厂众多,对高粱需求量大。同时又有大量的海边滩涂和内地丘陵等边际土地发展高粱种植。为了江苏高粱产业的快速、健康发展,本文分析了江苏省发展高粱产业的前景及存在的问题,探讨了拓宽高粱利用的可能方向。 相似文献
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近年来,国家为了发展粮食生产,确保粮食有效供给,提高种粮农民积极性,实行了小麦良种统供补贴政策,补贴标准逐年增加,补贴范围不断扩大。为了认真实施小麦良种统供项目,保证统供种子质量,必须抓好统供小麦良种生产,建立稳定的小麦良种繁育基地,进一步提高良种统供水平,从根本上解决我县小麦品种多、乱、杂问题。而现阶段,农村实行的是以家庭承包责任制为主的土地制度,使得当前大部分种子企业不能够组织大面积的规模生产, 相似文献
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A.M. Modarres R.I. Hamilton L.M. Dwyer D.W. Stewart D.E. Mather M. Dijak D.L. Smith 《Euphytica》1997,96(2):301-309
Development of maize (Zea mays L.) types that produce leaf area rapidly and finish vegetative development quickly would increase
production of maize in mid- to short-season areas. The Leafy (Lfy1) and reduced-stature (rd1) traits each make contributions
to this end. However, these two traits have not previously been combined. Our objective was to evaluate the morphological
aspects of non-leafy normal-stature (NLNS), leafy reduced-stature (LRS), non-leafy reduced-stature (NLRS), and leafy normal-stature
(LNS) maize inbreds. Two traits, Lfy1 and rd1, were incorporated into a series of inbreds, resulting in a range of canopy
architectures. Twelve variables were recorded for each of 30 inbreds over three years. The 12 variables were: seed emergence,
above-ear leaf number, below-ear leaf number, dead leaf number at tasselling, live leaf number at tasselling, total leaf number,
above-ear leaf area, ear leaf length, ear leaf width, ear height, internode length, and plant height. Inbreds containing the
Lfy1 trait had more above-ear leaf area, above-ear leaf number, dead leaf number at tasselling, total leaf number and number
of live leaves at tasselling than non-leafy inbred lines. Below-ear leaf number was not different among LRS, LNS, and NLNS
inbred lines. LRS and NLRS inbred lines were also not different for below-ear leaf number. Plant height, ear height, and ear
leaf length and width were higher in normal-stature than reduced-stature plants. The proportion of the seeds which emerged
was higher for LRS inbreds than the other trait groups.
This revised version was published online in July 2006 with corrections to the Cover Date. 相似文献
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此文首先回顾了国内外抗虫转基因玉米研究发展历程,归纳总结了转Bt毒蛋白基因玉米的常用转化方法和转基因玉米转化体的鉴定方法,对转Bt毒蛋白基因玉米后续实验的抗虫性分析鉴定及遗传稳定性评价与利用也进行了介绍。进而探讨了Bt毒蛋白基因在玉米遗传转化上善待解决的问题以及未来的发展方向。认为应加大力度对瓶颈技术进行深入研究,以期转Bt毒蛋白基因玉米能够获得更好的发展。 相似文献
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Leafy reduced-stature maize for short-season environments: Yield and yield components of inbred lines 总被引:1,自引:0,他引:1
A.M. Modarres R.I. Hamilton L.M. Dwyer D.W. Stewart M. Dijak D.L. Smith 《Euphytica》1997,97(2):129-138
Development of maize (Zea mays L.) types that produce leaf area and mature quickly would increase production of maize in mid-
to short-season areas. The leafy (Lfy1) and reduced-stature (rd1) traits both make contributions to this end. However, these
two traits have not previously been combined. Our objective was to evaluate the yield and yield components of non-leafy normal-stature
(NLNS), leafy reduced-stature (LRS), non-leafy reduced-stature (NLRS), and leafy normal-stature (LNS) maize inbred lines.
The two genes, ‘Lfy1’ and ‘rd1’, were incorporated into a series of inbred lines resulting in a range of canopy architectures.
Ten variables were recorded for each of 30 inbred lines over three years. The 10 variables were: corn heat unit requirement
from planting to tasselling, corn heat unit requirement from planting to silking, days between tasselling and silking, grain
moisture content, husk dry weight, cob dry weight, ear length, maximum ear circumference, grain yield and ratio of grain yield
to moisture content. Reduced-stature inbred lines reached anthesis more quickly than normal-stature inbred lines. Grain moisture
content was less in reduced-stature inbred lines than normal stature trait groups. Leafy-reduced stature plants had the highest
ratio of grain to moisture content and the lowest grain moisture content at harvest. Inbred lines containing the rd1 trait
matured more rapidly than other trait groups. The LRS trait group yielded more than the other groups, and showed great potential
for use in mid- to short-season environments.
This revised version was published online in July 2006 with corrections to the Cover Date. 相似文献
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为了明确淀粉合成途径中的关键酶的功能和调控机制,本文综述了玉米淀粉的结构、淀粉合成途径以及调控淀粉合成转录因子(DOF、NAC、MYB、bZIP、MADS-BOX和AP2/EREB等家族)的表达和功能机制。研究表明大部分转录因子能在玉米胚乳中表达,少数也能在叶片中表达;这些转录因子可以通过与淀粉合成酶编码基因和关键调控基因的启动子结合从而影响其表达来调控淀粉的合成。此外,蔗糖/ABA、蔗糖/IAA也可以和转录因子协同调控淀粉的合成。本文能够加深对玉米淀粉合成调控的理解,也为玉米品质改良提供重要的理论依据。 相似文献