水(shui)稻(dao)(dao)恶(e)苗(miao)病(bing)(bing)(bing)是我区(qu)水(shui)稻(dao)(dao)上(shang)最主要(yao)的种(zhong)(zhong)传病(bing)(bing)(bing)害(hai),由区(qu)农(nong)技(ji)中(zhong)心抽样(yang)送检经市农(nong)技(ji)中(zhong)心检测,今年(nian)(nian)我区(qu)水(shui)稻(dao)(dao)主要(yao)种(zhong)(zhong)植(zhi)(zhi)品种(zhong)(zhong)稻(dao)(dao)种(zhong)(zhong)恶(e)苗(miao)病(bing)(bing)(bing)平(ping)均带(dai)菌(jun)(jun)率(lv)为(wei)3.6%,最高8%,带(dai)菌(jun)(jun)率(lv)较(jiao)去(qu)年(nian)(nian)略(lve)低(di)。但🅘(dan)鉴于去(qu)年(nian)(nian)田间发病(bing)(bing)(bing)普遍,今年(nian)(nian)恶(e)苗(miao)病(bing)(bing)(bing)仍存在较(jiao)大流行风险。稻(dao)(dao)种(zhong)(zhong)药剂处理(li)是控(kong)制水(shui)稻(dao)(dao)种(zhong)(zhong)传病(bing)(bing)(bing)害(hai)最经济有效的措施,为(wei)此希望各街镇(zhen)及广大种(zhong)(zhong)植(zhi)(zhi)户引起高度重(zhong)视,认真做(zuo)好水(shui)稻(dao)(dao)种(zhong)(zhong)子处理(li)工作,为(wei)今年(nian)(nian)水(shui)稻(dao)(dao)高产(chan)丰收(shou)打下良好的基础。具体技(ji)术要(yao)求如下:
一、晒种选种
播前(qian)选(xuan)晴(qing)好天气晒种1~2天,并精选(xuan)种子,除(chu)去(qu)秕粒病粒、减少菌源,以提高种子的发芽势,增强(qiang💜)秧苗抗病能力。
二、药物制剂处置(zhi)杀菌消(xiao)毒技术(shu)性(xing)
1、清理措施:
每4kg稻(dao)种(zhong)(zhong)(亩(mu)用种(zhong)(zhong)量(liang))用浸种(zhong)(zhong)药(yao)剂9ml,采用二次稀释(shi)法(fa),先加(jia)少量(liang)水(shui)调成(cheng)(cheng)浆糊(hu)状(zhuang),然后再加(jia)清水(shui)6kg稀释(shi),配(pei)成(cheng)(cheng)药(yao)液。将选(xuan)过的稻(dao)种(zhong)(zhong)4kg(亩(mu)用种(zhong)(zhong)量(liang))浸入配(pei)成(cheng)(cheng)的药(yao)液中搅拌均匀,以药(yao)液高出种(zh🧔ong)(zhong)子2-3cm为宜。(若(ruo)稻(dao)种(🎶zhong)(zhong)数量(liang)多可按上述相应比(bi)例配(pei)制)
2、浸(jin)种(zhong)时(shi)(shi)间(jian)(jian):日平均气(qi)温低𒀰于20℃,浸(jin)种(zhong)时(shi)(shi)间(jian)(jian)应(ying)为(wei)60小(xiao)时(shi)(shi),20℃以(yi)上,浸(jin)种(zhong)时(shi)(shi)间(jian)(jian)应(ying)在48小(xiao)时(shi)(shi)左右,具体根据气(qi)温变化掌握好(hao)时(shi)(shi)间(jian)(jian),但浸(jin)足(zu)时(shi)(shi)间(jian)(jian)是保证(zheng)药൩效的关键(jian)。
三、需要注意事由
1、浸(jin)(jin)种(zhon🍸g)不锈(xiu)钢容器要(yao)加盖(gai),并放置在背阴遮光处。严停止(zhi)使用蛇皮袋进行(xing)(xing)浸(jin)(jin)种(zhong),立即影晌成效。稻种(zhong)清洗后不要(yao)求用水冲冼,可进行(xin📖g)(xing)沥干催芽施肥。
2、去(qu)除(chu)剂的计量(liang)清(qing)理过的种子资源,勿与食材、饲草摆到我(wo)们(men)一起(qi♋),不恰喂ဣ料禽畜,更不恰把他(ta)们(men)拿(na)来生(sheng)产制作(zuo)饲草或食材。
3、口服药物后(hou)应(ying)防范(fa🔯n)药液等会(hui)直接(jie)排放到水塘、虾塘等鱼(yu)业养(yang)🉐殖户(hu)的(de)的(de)地方,防范(fan)从(cong)而造成鱼(yu)、虾、蟹死亡视频。
4、农(nong)约礼品盒废(fei)物物不(bu)(bu)可以轻易丢去或不(bu)(bu)能代(dai)理(li),不(bu)(bu)能归还各(ge)项农(non𒉰g)约礼品盒废(fei)物物收(shou)旧点(dian)。
浸种血药的品种等详请询问地方飞防行业。