加速小麦良种推广的几项主要措施

来源 :种子世界 | 被引量 : 0次 | 上传用户:wangxd
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
小麦是我市第一大粮食作物,常年播种面积230万亩左右,年产量30多万吨,分别占粮田总面积和总产量的50%和40%,小麦生产的好坏,直接左右着全市粮食生产形势。长期以来,我们始终把良种推广作为促进小麦产量提高的突破口,积极探索,常抓不懈,收到了显著的成效。1993年全市小麦收获面积234.18万亩,新良种推广面积达到了213.17万亩,占91%。据历年区域试验资料及大田调查数据汇总分析,在同等条件下这些新良种平均较普通品种增产16.8%,亩净增产26.2公斤,共增产小麦5.16万吨。回顾我们多年来所做的工作,主要可概括为以下几个方面: Wheat is the largest grain crop in our city. The perennial planting area is about 2.3 million mu and the annual output is more than 300,000 tons, accounting for 50% and 40% of the total grain output and total output, respectively. The quality of wheat is directly affected by the production The city’s food production situation. For a long time, we have always regarded the promotion of elite as a breakthrough point to promote the improvement of wheat yield. We have actively explored and persevered with remarkable achievements. In 1993, the city’s wheat harvest area of ​​2,341,800 mu, the promotion area of ​​new varieties reached 21,317 mu, accounting for 91%. According to the data from the regional experiments and the field survey data over the years, these new varieties increased 16.8% more than ordinary varieties under the same conditions, with a net increase of 26.2 kg and a total increase of 51,600 tons of wheat. Looking back over what we have done over the years, we can mainly summarize the following aspects:
其他文献
Cell migration plays an essential role in a wide variety of physiological and pathological processes.In this paper we numerically discuss the properties of an a
茭白(Zizania latifolia Turcz.)为宿根性水生草本植物,原产中国和东南亚。古代主要采食其籽粒,作为粮食作物栽培;后来因受黑粉菌(Ustilago esculenta P. Henn.)的侵染,其植
本文将基于城乡居民二元化异质体的天然划分,建立城乡二元化主体收入差异的信贷需求差异机制与理论模型,并通过模型分析信贷需求差异对收入差异造成的冲击,解析均衡条件下城
1.使用不育系原种作制种母本。根据国家标准,杂交稻制种田间父母本杂株率一级种应不高于0.1%,故使用纯度达99.9%的不育系原种作母本,制种田可基本不去杂,对于提高种子纯度效
A guidance policy for controller performance enhancement utilizing mobile sensor-actuator networks (MSANs) is proposed for a class of distributed parameter syst
We study structural,mechanical,and electronic properties of C20,Si20 and their alloys (C16Si4,C12Si8,C8Si12,and C4Si16) in C2/m structure by using density funct
小麦是我国北方第一大粮食作物,秋种时如何选用品种,不仅与种植自身利益密切相关,而且也关系到明年的夏季收成及夏粮征购。然而,由于受条件的限制,许多种植者信息不灵,对各
1991年在黄河三角洲的利津县,麦田喷施2,4-D除草剂时,部分棉田受其危害。受害棉苗顶点萎缩,生长停滞,叶片呈鸡爪形,果枝难以外伸。为挽救这些棉花,采取了苗期打顶心的措施,分
Pseudowaves, known as burst-ion signals, which are different from plasma normal modes, exist frequently in ion–wave excitation experiments when launching the w