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超级稻“湘两优900”喜获丰收
2017-08-28 06:11:48 中国青年网
湖南日报8月27日讯(记者 胡宇芬)在浏阳市北盛镇边洲村,采用省农科院有机稻米生产技术体系的1800亩稻田陆续进入丰收季。昨天下午,省农学会组织专家进行了现场评议,专家组认为示范区水稻生长稳健,田间病虫及杂草得到有效控制。其中,101亩超级稻“湘两优900”经现场测产,折算每亩干谷720.3公斤。
省农科院党委书记柏连阳教授告诉记者,该院与浏阳市农业局联合,拟将边洲村建设成为“中国有机第一村”,实现不施化肥和农药、不用不能降解的农膜、作物产量保持常规生产水平、重金属含量低于国家标准。
边洲村共有3700多亩稻田,今年被省农科院纳入有机农业生态试验示范园的面积将近一半。行走在田埂上,记者看到两边的稻田里生物防虫设施呈现立体状态。每亩在竹竿上系10个纸杯,释放1万只赤眼蜂防治二化螟、稻纵卷叶螟等鳞翅目害虫;每10亩设置一个水池,种植豆类和棚架蔬菜,供蛙类产卵孵化、蜘蛛越冬等;每35亩至40亩,安装1盏黄色的益害昆虫分离诱虫灯;用来诱杀害虫的诱捕剂及胶粘板也有分布。
示范园技术专家张玉烛研究员说,1800亩稻田除了采用“蜂—蛙—灯”生物控虫不施化学农药外,还采用“绿肥+商品有机肥”而不施化肥,并采用“生物控草肥”控制田间杂草,不用化学除草剂。
此次示范最有看点的是101亩超级稻“湘两优900”稻蛙共生模式示范基地。研究人员首次探索每亩投放黑斑幼蛙1万只,以期实现防虫和增加稻田产出双重目标。专家组随机抽取3丘田进行现场测产,实际面积1650平方米,平均亩产毛谷837.6公斤,按13.5%含水量折算干谷720.3公斤。同时,经实地调查,黑斑幼蛙成活率50%以上,个体重平均约70克。边洲村村主任许松林介绍,目前的成蛙收购保底价约每公斤30元,每亩成蛙预计可增加收入超过5000元。
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