水(shui)稻(dao)恶(e)(e)苗(miao)(miao)病是(shi)我(wo)区(qu)水(shui)稻(dao)上最主(zhu)要(yao)(yao)的种(zhong)传病害(hai),由区(qu)农技(ji)中心抽样(yang)送检经市农技(ji)中心检测(ce),今年(nian)(nian)我(wo)区(qu)水(shui)稻(dao)主(zhu)要(yao)(yao)种(zhong)植品(pin)种(zhong)稻(dao)种(zhong)恶(e)(e)苗(miao)(miao)病平(ping)均带菌(jun)率为(wei)3.6%,最高8%,带菌(jun)率较(jiao)(jiao)去年(nian)(nian)略(lve)低。但鉴于去年(nian)(nian)田间(jian)发(fa)病普遍,今年(nian)(nian)恶(e)(e)苗(miao)(miao)病仍(reng)存(cun)在较(jiao)(jiao)大(da)流行风险。稻(dao)种(zhong)药(yao)剂处(chu)理(li)是(shi)控制水(shui)稻(dao)种(zhong)传病害(hai)最经济(ಌji)有效的措施(shi),为(wei)此希望(wang)各街镇(zhen)及广大(da)种(zhong)植户引(yin)起高度重(zhong)视,认真(zhen)做好水(shui)稻(dao)种(zhong)子处(chu)理(li)工(gong)作,为(wei)今年(nian)(nian)水(shui)稻(dao)高产丰收打(da)下良(liang)好的基础。具体技(ji)术要(yao)(yao)求如(ru)下:
一、晒种选种
播前选晴(qing)好(hao)天(tian)气晒种1~2天(tian),并精选种子(zi),除去秕粒病粒、减(jian)少(shao)菌源,以提෴高种子(zi)的发芽势,增强秧苗抗病能力(li)。
二、药物治理清洗系(xi)统(tong)
1、除理方式:
每4kg稻种(zhong)(亩用(yong)(yong)种(zhong)量(liang))用(yong)(yong)浸种(zhong)药剂9ml,采用(yong)(yong)二(er)次稀释(shi)法,先加(jia)少量(liang)水调成浆糊状,然(ran)后再(zai)加(jia)清水6kg稀释(shi),配成药液(ye♕)。将选过的稻种(zhong)4kg(亩用(yong)(yong)种(zhong)量(liang))浸入配成的药液(ye)中(zhong)搅(jiao)拌均匀,以药液(ye)高出种(zhong)子2-3cm为宜。(若(ruo)稻种(zhong)数量(liang)多(duo)可按上述相应比例配制)
2、浸(jin)种时(shi)(shi)间:日(ri)平均(jun)气(qi)温(wen)低于(yu)20℃,浸(jin)种时(shi)(shi)间应(ying)为60小(xiao)时(shi)(shi),20℃以上,浸(j💛in)种时(shi)(shi)间应(ying)在48小(xiao)时(shi)(shi)左(zuo)右,具(ju)体(ti)根据气(qi)温(wen)变化掌握好时(shi)(shi)间,但ꦏ浸(jin)足时(shi)(shi)间是保证药效的关键。
三、还要注意细节
1、浸(jin)种(zhong)(zhong)溶器要(🌸yao)加盖,并放置于背阴背光处。严禁止蛇皮袋就可(ke)(ke)以(yi)(yi)浸(jin)种(zhong)(zhong),以(yi)(yi)防关(guan༺)系成效。稻种(zhong)(zhong)酒精消毒后(hou)不所需盐水冲冼,可(ke)(ke)就可(ke)(ke)以(yi)(yi)沥干催芽采收。
2、化学剂治理过的图片(pian)种子,勿与美(mei)食、饲料添加(jia)剂厂放于一(yi𒆙)起ꦿ去(qu),严(yan)禁喂饲禽畜,更严(yan)禁时用(yong)手(shou)工(gong)(gong)加(jia)工(gong)(gong)饲料添加(jia)剂厂或美(mei)食。
3、用药指导后应以(yi)防药液等立即外排水塘、虾塘等水产(chan)海(hai)产(chan)品家庭(ting)养殖的部位,以(yi)防可能(neng)会导致(zhღi)鱼、虾、蟹(xie)去世。
4、化肥(fei)纸(zhi)(zhi)盒包(bao)装袋丢(diu)(diu)掉(diao)物(wu)不得不隨便丢(diu)(diu)掉(diao)或自己进行(xing)应(ying)对(dui),实时(shi)交给各个等(deng)级化肥(fei)纸(zhi)(zhi)盒包🧔(bao)装袋丢(diu)(diu)掉(diao)物(wu)收回点。
浸种化剂木种等详请咨询服务当地的值保部位。