男人帮

一 |     ELWOOD, N.Y. -- A police officer fatally shot a man who charged at authorities with two swords on Long Island, New York, and the police commissioner said Wednesday that the shooting appeared to be justified.Alan Weber, 54, was pronounced dead at a hospital after Tuesday night's shooting in Elwood.Police responded to a 911 call reporting a man acting violently inside a home. Weber was screaming and breaking items when officers arrived and refused to come outside, police said in a statement.The Suffolk County officers entered and Weber confronted them with the swords while wearing a fencing mask, Police Commissioner Rodney Harrison said, adding that Weber did not obey commands to drop the swords and an officer shot a stun gun at him but it had no effect.Weber then charged, and one officer fired several shots, Harrison said. The officer's name was not released.“I feel the officers had no other choice but to use what they had to use to stop the threat,” Harrison said.Neighbors said they had called police earlier in the day when Weber was running around to houses in the neighborhood, trying to open doors and take mail. Police responded but did not take him into custody, they said.State and local authorities are investigating the shooting. Harrison said he reviewed officers' body camera video and “at this time I believe it's a justified shooting.”。    　　广西崇左8月23日电(涂丽莎 陈沿佑)秋日时节，广西崇左市扶绥县渠黎镇甜蜜之光现代甘蔗产业园满目青绿。

二 | 桂糖44号、云蔗081609、桂糖76号、中糖3号、中辐1号等甘蔗品种长势喜人，大多数蔗株高度超3米。园区采用的多品种轮作、分区种植方式，保障了这片土地长期稳产与生态韧性。8月22日，广西崇左市扶绥县渠黎镇甜蜜之光现代甘蔗产业园。

三 | (无人机照片)周圆曦 摄　　跟甘蔗打交道已有八年的杨学，从给种植户做技术指导，到创办农业科技公司。这些年，他见证甘蔗种植从靠老经验慢慢变成“科技种田”，心里装着一本清晰的对比账。在他看来，用上甘蔗脱毒种苗及其配套栽培技术，宿根年限能从3年延长到5年左右，出苗率可达95%。“崇左以前种甘蔗一亩大概收4吨，如今搭配新品种、新农艺、新种植模式，亩产提升到了4.8吨。”杨学说道。　　针对园区5000亩连片蔗田的管护难题，杨学团队打破传统人工管护模式，把整片蔗田划分成若干可控单元，并使用甘蔗水肥药一体化智能灌溉系统。该系统支持机房操作、手机APP远程调控，可精准设置灌溉时间、流量和水量，一个人就能管护千亩以上蔗田，在减少人工投入的同时也降低人为操作误差。　　设备间里，杨学演示并介绍：“系统已升级成AB双管模式，滴水、滴肥、滴药能够同步精准调控。单亩每年电费从80元降到50元；4人一天可以完成600亩施肥作业，以前30人一天都做不到100亩。”　　在采收环节，机械化作业的降本优势同样凸显。杨学算了一笔账：传统人工砍收、装车，以园区亩产7吨甘蔗、按每吨160元计算，成本超1100元；换成机械化收割，每亩约200元国家机收补贴，连片蔗田农户承担每亩50元至80元机收费，规模越大效益越可观。园区推行蔗叶粉碎还田技术，每亩还可节省三四十元的复合肥支出。图为广西崇左市扶绥县渠黎镇甜蜜之光现代甘蔗产业园种植的甘蔗。陈沿佑 摄　　从一株健康种苗到一片高产蔗田，科技创新正在不断重塑甘蔗产业发展模式。

四 | 近年来，中国热带农业科学院热带生物技术研究所持续面向甘蔗产业发展需求，联动广西农业科学院等科研单位，围绕甘蔗品种改良、种苗繁育、病虫草害综合防控、绿色高效栽培、机械化收获等方向开展关键技术攻关，推动科技成果从实验室走向田间。　　“广西是全国甘蔗核心产区，种植面积1200多万亩，产糖量占全国六成以上。”中国热带农业科学院热带生物技术研究所甘蔗中心研究员吴期滨介绍，中国甘蔗栽培技术历经传统经验积累、现代技术奠基、绿色高效智能化转型三个阶段。眼下业内重点聚焦两大攻关方向：选育适配机械化采收的优质甘蔗品种，研发适配优良品种的专用农机，推动农机与农艺深度融合。

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