水稻(dao)恶苗(miao)病(bing)是我(wo)区(qu)(qu)水稻(dao)上最主要(yao)的(de)种(zhong)(zhong)传病(bing)害,由(you)区(qu)(qu)农技(ji)中(zhong)心抽(chou)样(yang)送检(jian)(jian)经(jing)市农技(ji)中(zhong)心检(jian)(jian)测,今年(nian)(nian)我(wo)区(qu)(qu)水稻(dao)主要(yao)种(zhong)(zhong)植品种(zhong)(zhong)稻(dao)种(zhong)(zhong)恶苗(miao)病(bing)平均带(dai)菌率为💟(wei)3.6%,最高(gao)8%,带(dai)菌率较(jiao)去年(nian)(nian)略低。但鉴于去年(nian)(nian)田间发(fa)病(bing)普遍,今年(nian)(nian)恶苗(miao)病(bing)仍存在较(jiao)大流行风险。稻(dao)种(zhong)(zhong)药剂(ji)处理(li)是控制水稻(dao)种(zhong)(zhong)传病(bing)害最经(jing)济有效的(de)措施,为(wei)此希望(wang)各街(jie)镇及广大种(zhong)(zhong)植户(hu)引起高(gao)度重视,认真做好(hao)(hao)水稻(dao)种(zhong)(zhong)子处理(li)工(gong)作,为(wei)今年(nian)(nian)水稻(dao)高(gao)产丰收打下良(liang)好(hao)(hao)的(de)基础(chu)。具(ju)体技(ji)术要(yao)求如(ru)下:
一、晒种选种
播前(qian)选晴(qing)好天气(qi)晒种1~2天,并精(jing)选种子(zi),除去秕粒(li)病粒(li)、减少菌(🤡jun)源,以提高种子(zi)的(de)发芽(ya)势,🌱增强秧(yang)苗抗(kang)病能力(li)。
二、药液治理 清(qing)洗技术(shu)工(gong)艺
1、办理措施:
每4kg稻种(zhong)(zhong)(zhong)(亩(mu)用(yong)种(zhong)(zhong)(zhong)量)用(yong)浸(jin)种(zhong)(zhong)(zhong)药剂9ml,采(cai)用(yong)二次(ci)🃏稀(xi)释法,先(xian)加(jia)少量水(shui)调成(cheng)浆(jiang)糊状,然后再加(jia)清水(shui)6kg稀(xi)释,配成(cheng)药液(ye)(ye)。将(jiang)选过的稻种(zhong)(zhong)(zhong)4kg(亩(mu)用(yong)种(zhong)(zhong)(zhong)量)浸(jin)入配成(cheng)的药液(ye)(ye)中搅拌(ban)均匀,以药液(ye)(ye)高出种(zhong)(zhong)(zhong)子2-3cm为宜。(若稻种(zhong)(zhong)(zhong)数量多可按上述相(xiang)应比例配制)
2、浸(jin)种时间(jian):日平均(jun)气温(wen)低于20℃,浸(jin)种时间(jian)应为(wei)60小时,20℃以(yi)上,浸(jin)种൲时间(jian)应在48小时左右,具体根据气温(wen)变化(hua)掌握好꧑(hao)时间(jian),但(dan)浸(jin)足(zu)时间(jian)是保(bao)证药效的关(guan)键。
三、注意项目项目
1、浸种(zhong)器(qi)皿需(xu)(xu)用(yong)盖,并放(fang)在背(bei)阴背(bei♎)光处。严(yan)不可(ke)用(yong)蛇(she)皮袋立(li)即(ji)浸种(zhong)ღ,为了避免损害实际效果。稻种(zhong)灭(mie)菌(jun)后不需(xu)(xu)用(yong)盐(yan)水冲冼(xian),可(ke)立(li)即(ji)沥干(gan)催芽栽种(zhong)。
2、血药治理 过的(de)图片种(zhong)子,勿与食(shi)物ꦆ(wu)营养(yang)、词(ci)料添加剂(ji)放置分(fen)着(zhe),不能喂养(yang)禽(qin)畜🧔,更(geng)不能常做处(chu)理词(ci)料添加剂(ji)或食(shi)品类。
3、用(yong)药(yao)(yao)治疗后应杜绝药(yao)(yao)液(ye)等单(daꦬn)独排向渔(yu)塘、虾塘等水产(chan)品♕生态养殖(zhi)的去处,杜绝带来鱼、虾、蟹消亡。
4、除(chu)草剂(ji)包(bao)装(zhuang🐻)袋(dai)方(fang)(fang)式(shi)垃圾(ji)(ji)物不了私(si)自丢(diu)去或自己进(jin)行正确处理,直接交给各个(ge)除(chu)草剂(ji)包(bao)装(zhuang)袋(dai)方(fang)(fang)式(shi)垃圾(ji)(ji)物收废(fei)点。
浸种药物制剂品種等详请谘询本地人植物保护部们。