水稻(dao)恶苗(miao)病是我(wo)区水稻(dao)上最(zui)主要(yao)的(de)种(zhong)(zhong)(zhong)传(chuan)病害(hai),由区农技(ji)中心抽样送检经市农技(ji)中心检测,今(jin)年(nian)(nian)我(wo)区水稻(dao)主要(yao)种(zhong)(zhong)(zhong)植品种(zhong)(zhong)(zhong)稻(dao)♏种(zhong)(zhong)(zhong)恶苗(miao)病平均带(dai)菌率为3.6%,最(zui)高8%,带(dai)菌率较去年(nian)(nian)略低(di)。但鉴于去年(nian)(nian)田间发病普遍(bian),今(jin)年(nian)(nian)恶苗(miao)病仍存在较大流行(xing)风险。稻(dao)种(zhong)(zhong)(zhong)药(yao)剂处理是控制水稻(dao)种(zhong)(zhong)(zhong)传(chuan)病害(hai)最(zui)经济(ji)有效的(de)措施,为此(ci)希望(wang)各(ge)街(jie)镇及(ji)广大种(zhong)(zhong)(zhong)植户引起高度重视,认真做好水稻(dao)种(zhong)(zhong)(zhong)子处理工作(zuo),为今(jin)年(nian)(nian)水稻(dao)高产丰收打(da)下良好的(de)基(ji)础。具体技(ji)术要(yao)求如下:
一、晒种选种
播前选晴好天气晒种(zhong)1~2天,并精选种(zhong)子,除去秕粒病(bing)粒、减少菌源,以提高种(zhong)子的发芽势,增强秧苗抗(kang)病(⭕bing)能力(li)。
二、药物除理灭菌(jun)技能
1、治疗技巧:
每4kg稻种(zhong)(zhong)(zhong)(亩用(yong)种(zhong)(zhong)(zhong)量)用(yong)浸(jin)种(zhong)(zhong)(zhong)药(yao)剂9ml,采用(yong)二次稀(xi)释法,先加(jia)少量水(shui)调(diao)成浆糊状,然后再加(jia)清水(shui)6kg稀(xi)释,配(pei)成药(yao)液(ye)(ye)。将选过的(de)稻种(zhong)(zhong)(zhong)4kg(亩用(yong)种(zhong)(zhong)(zhong)量)浸(jin)入配(pei)成的(de)药(y🍃ao)液(ye)(ye)中(zhong)搅拌均(jun)匀,以药(yao)液(ye)(ye)高出种(zhong)(zhong)(zhong)子2-3cm为(wei)宜。(若稻种(zhong)(zhong)(zhong)数量多可按上述相应比例配(pei)制)
2、浸(jin)种(zhong)时(shi)(shi)(shi)(shi)间(jian):日平(ping)均(jun)气温(wen)低于20℃,浸(jin)种(zhong)时(shi)(shi)(shi)(shi)间(jian)应为6ﷺ0小时(shi)(shi)(shi)(shi),20℃以上(shang),浸(jin)种(zhong)时(shi)(shi)(shi)(shi)间(jian)应在48小时(shi)(shi)(shi)(shi)左右,具体根(gen)据气温(wen)变化掌(zhang)握好时(shi)(shi)(shi)(shi)间(jian),但浸(jin)足(zu)时(shi)(shi)(shi)(shi)间(ji💯an)是保证药效的关键。
三、小心事由
1、浸(jin)种(zhong)(zhong)储(chu)槽用加盖,并放至荫凉闭光处。严🍎(yan)阻止蛇皮袋(dai)一直浸(jin)种(zhong)(zhong),一旦影(ying)响(xiang)力成效。稻种(zhong)(zhong)灭菌后(hou)不(bu)需用用水(shui)冲冼,可一直沥干(gan)催芽(ya)采收。
2、制(zhi)剂补(bu)救(jiu)过的种(zhong)籽,勿与美食(shi)、饲草(cao)存(cun)放(fang)同吃,不许喂食(shi)禽畜,更不许用做加工ꦺ制(zhi)作饲草(cao)或食(sh♏i)物。
3、联(lian)合用药后应制止(zhi)药液等简(jian)单排放到养鱼塘、虾塘等海(hai)产农村养殖的方面,制止(zhi)引起(qi)🌞鱼、虾、蟹死(si)掉。
4、农约(yue)封装盒(he)废品(pin)物(wu)不应(ying)随(sui)处扔掉或自愿(yuan)救治,及时的交给各级党委农约(yue)封装盒(he)废品(pin)物(w🥂u)收旧(jiu)点。
浸种化学剂的品种等详请咨询了解本县植物保护部门管理。