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宁夏银川：光伏鱼菜共生种养 让农业实现绿色循环发展******
中新网银川1月10日电 (记者 李佩珊)正值寒冬，但在宁夏银川市兴庆区掌政镇碱富桥村的光伏鱼菜公园内，光伏板架在棚顶，大棚池塘里的鱼自由戏水欢游，一侧采用浮板新技术种植的芹菜和小白菜鲜嫩葱郁。
“这种新模式种养，不仅解决了园区的用电，剩余的电还能卖给国家电网。今天一个光伏大棚就能产生45度电，一个厂房500度电，这些都是收益。”宁夏益农新能源有限公司总经理薛小龙说，“我们现在是1个兆瓦的农光互补发电系统，可实现夏季日发电量3000度、冬季日发电量1800度，年发电量达到80万度，除满足园区自身生产运行用电50万度需求外，每年可实现30万度上网收益，可增收10万元以上。”
光伏鱼菜共生种养模式。 李嘉伟 摄据介绍，“光伏鱼菜共生”模式是一种集蔬菜栽培与高密度鱼养殖为一体的生态系统，鱼产生的排泄废弃物为农作物生长提供富足的营养，经农作物净化吸收的水又可作为养殖水返回。同时，该模式可利用大棚顶部铺设光伏组件，推动农机与能源完美结合，既解决农业设施用电，又可提供清洁能源，实现“一棚两用”“农光互补”。
光伏鱼菜公园光伏大棚占地面积2400平米，配套温室3000平米，系统采用闭环与开环双系统生产模式，夏季以养殖鱼菜共生系统，冬季以室内垂钓鱼菜共生循环为主，可进行鱼菜双收周年生产。大棚采光面采用汉能光伏板发电系统，通过自发自用余电上网模式，为系统中曝气泵、循环水泵、补光照明灯、温室卷帘机、环流风机等耗电设备提供电力。鱼池废水通过鱼菜共生系统过滤、吸收、净化后循环回到鱼池。实现了水资源高效利用、三产融合的绿色生态循环生产模式。
光伏鱼菜共生种养模式。 李嘉伟 摄近年来，兴庆区依托国家、自治区、银川市渔业产业扶持政策，率先争取财政支农和渔业绿色循环发展试点项目，完成标准化池塘改造6330亩，实施标准化池塘改造和养殖尾水治理项目，不断推动渔业绿色高质量发展，统筹推进区域化布局、规模化经营、标准化生产、产业化发展。
“通过鱼菜共生、‘光伏+’等建设项目，农产品附加值进一步提高，产业链价值链进一步延伸。有机蔬菜年产值20万元以上，淡水鱼年产值60万元以上，光伏发电年产值40万元。基地总产值300万元，年实现纯利润100万元。”薛小龙说。(完)
中新网评：美国众议长选举“连续剧”暴露美式民主痼疾****** 中新网北京1月9日电(蒋鲤)在15轮投票表决后，美国众议院议长选举这场“连续剧”终于落下帷幕，众议院共和党领袖凯文·麦卡锡最终成功当选第55任美国众议院议长。这是美国国会过去164年来耗时最久的一次议长选举记录，将美国“对抗式民主”的弊端暴露无遗。
资料图：美国众议院共和党领袖麦卡锡。中新社记者 沙晗汀摄 由于两党对立加剧、党派内斗、利益分配不均等因素，众议长选举陷入一场拉锯战。在此次众议长竞选中，美国民主党议员继续抱团，多轮投票中，一票不投麦卡锡，共和党右翼“强硬派”领头的约20人小团体也拒绝投票麦卡锡。 麦卡锡的当选之路一波三折，除了本人的“政治投机派”角色在国会不受欢迎外，与共和党内部政治分歧关系密切。 一方面，共和党党内反对者认为，麦卡锡对民主党态度过于软弱，无力对抗民主党控制的参议院和拜登政府，另一方面，因为共和党的多数优势微弱，党内一些影响力较小的派系的政治力量则被放大，有利于他们巩固自己的选票。 此外，党内反对者也认为，自己的选票没有换取更多利益，希望以此作为筹码换取麦卡锡更大的让步，比如让他们获得众议院重要委员会中的职务。 作为仅次于美国总统、副总统的政坛三号人物，众议院议长通常由众议院多数党领袖担任，选举几乎没有悬念。然而，麦卡锡此次为当选，不得不做出多个关键让步，其中可能包括恢复一项罢黜议长动议机制，使得众议长的权力被削弱，难以掌控众议院。 美国有线电视新闻网CNN称，麦卡锡在这场不合时宜的政治勒索中作出让步，这种绥靖政策只会让极端主义势力更加强大。 这场引发全世界围观的尴尬选举暴露出美国政治存在严重的对立和分化。在权力博弈思维的裹挟下，党派利益凌驾于国家和人民利益之上，美国两党相互拆台，陷入“为反对而反对”的无脑对垒。而即便是一党内，也会因为利益分配问题产生不同的小派系，相互对抗，选票变成了谋利益的工具。 从国会山骚乱到打破记历史记录的15轮众议长选举，“对抗式民主”让美国政治陷入瓶颈，长期对抗势必会让政客们丧失客观公正的判断能力，其政治阶层是否有能力治理国家也会引发质疑。 两党之争和党派内斗进一步放大了美国政治体制弊病，美国所谓的“民主”形象，让全世界大跌眼镜。鼓吹以选民利益为先的美式选举，变成了政客们利益置换的游戏，进一步彰显出美国“民主政治”日渐失能，不断极化的党争已使美国政治制度陷入死循环。
House speaker election reveals deep-rooted problems in U.S. democracy (ECNS) -- The Republican leader Kevin McCarthy was elected as the 55th speaker of the U.S. House of Representatives after 15 ballots. As the most grueling House speaker election in the past 164 years, the election has highlighted the defects of the country’s "confrontational democracy". The election once reached a stalemate due to intense partisan strife, inner-party struggle among the Republicans, uneven distribution of interests, and more. Democratic Party members forged a close alliance, refusing to vote for McCarthy, while about 20 Republicans also declined to cast ballots for the GOP leader. Except for his unpopular role as a "political speculator" in Congress, McCarthy’s hard-won election can be attributed to turmoil within the Republican Party. On the one hand, opponents in the Republican Party believe that the GOP leader's attitude toward the Democrats is too weak to confront the Senate controlled by Democrats and the Biden administration. On the other hand, the political power of some less influential factions in the Republican Party has been amplified due to the Party’s weak majority advantage in the House of Representatives, which is conducive to consolidating their ticket warehouses. Meanwhile, these opponents believe that their votes failed to win them more benefits, hoping to use this as a bargaining chip for McCarthy's further concessions, such as getting them positions in important House Committees. As the third political figure after the President and Vice President of the U.S., the speaker, by tradition, is the head of the majority party in the House of Representatives. But McCarthy has made many concessions in order to bring the ultra conservatives along, involving what’s known as the “motion to vacate,” a mechanism by which members can force a vote to depose the speaker. The reported concessions will empower individual members at the expense of McCarthy’s sway as speaker. CNN thought the concessions he made during this unseemly political shakedown would only make the extremist faction more powerful. This embarrassing election, which has drawn global attention, exposed the serious opposition and polarization in American politics. Both Democrats and Republicans put their interests before that of the country and its people, attacking and opposing each other irrationally. Besides, different factions arise within a single party and confront each other because of the distribution of interests. Votes have become a tool to win more benefits. From Capitol riots to the House Speaker election with record-breaking ballots, "confrontational democracy" has become a bottleneck of American politics. Long-term confrontation will surely impede politicians to think objectively and fairly while their capacity of governing the country will also raise doubts among the public. Both parties’ struggle and infighting among the Republicans have further amplified the defects of the American political system, with its "democratic" image shocking the world. The U.S.-style election, which advocates putting voters' interests first, has become a game of interest exchange among politicians. In addition, it further demonstrates the malfunction of American "democratic politics" and the constantly polarized party struggle that has trapped the American political system into an infinite cycle.
（文图：赵筱尘 巫邓炎） [责编：天天中] 阅读剩余全文（）  视觉焦点
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