水(shui)(shui)稻恶苗(miao)病(bing)是我区(qu)水(shui)(shui)稻上最主(zhu)(zhu)要(yao)的种(♔zhong)(zhong)传(chuan)(chuan)病(bing)害,由区(qu)农技(ji)中(zhong)心抽(chou)样(yang)送检经(jing)市农技(ji)中(zhong)心检测,今年(nian)我区(qu)水(shui)(shui)稻主(zhu)(zhu)要(yao)种(zhong)(zhong)植品种(zhong)(zhong)稻种(zhong)(zhong)恶苗(miao)病(bing)平均带菌率(lv)为(wei)3.6%,最高(gao)8%,带菌率(lv)较去年(nian)略低。但(dan)鉴于(yu)去年(nian)田间发(fa)病(bing)普遍,今年(nian)恶苗(miao)病(bing)仍存(cun)在较大(𒁏da)(da)流行(xing)风险。稻种(zhong)(zhong)药(yao)剂处理(li)是控制水(shui)(shui)稻种(zhong)(zhong)传(chuan)(chuan)病(bing)害最经(jing)济有(you)效的措施,为(wei)此希望各街镇及广(guang)大(da)(da)种(zhong)(zhong)植户引起高(gao)度重视(shi),认真(zhen)做好水(shui)(shui)稻种(zhong)(zhong)子处理(li)工作,为(wei)今年(nian)水(shui)(shui)稻高(gao)产丰收打下(xia)良好的基础(chu)。具体技(ji)术要(yao)求(qiu)如下(xia):
一、晒种选种
播前选晴好天(tian)气晒种(zhong)(zhong)1~2天(tian),并精选种(zhong)(zhong)子,除去秕(bi)粒病粒、减少菌源,以提高种(zhong)(zhong)子的发芽势,增强(qian☂g)秧苗抗病能力ꦿ。
二、血药除理(li)消(xiao)毒(du)杀菌方法
1、外理手段:
每(mei)4kg稻(dao)种(zhong)(亩用(yong)种(zhong)量)用(yong)𓄧浸种(zhong)药(yao)剂9ml,采用(yong)二(er)次(ci)稀释(shi)法,先(xian)加少量水(shui)调(diao)成(cheng)浆糊状,然后再加清水(shui)6kg稀释(shi),配(pei)成(cheng)药(yao)液。将(jiang)选(xuan)过(guo)的稻(dao)种(zhong)4kg(亩用(yong)种(zhong)量)浸入配(pei)成(cheng)的药(yao)液中搅拌均匀,以药(yao)液高(gao)出种(zhong)子2-3cm为宜。(若稻(dao)种(zhong)数(shu)量多可按上述相应比例(li)配(pei)制)
2、浸(jin)种时(shi)(shi)间(jian)(jian)(💝jian):日平均(jun)气温低于20℃,浸(jin)种时(shi)(shi)间(ji𒊎an)(jian)(jian)应为60小时(shi)(shi),20℃以上,浸(jin)种时(shi)(shi)间(jian)(jian)(jian)应在48小时(shi)(shi)左(zuo)右,具体根据气温变(bian)化掌握好时(shi)(shi)间(jian)(jian)(jian),但(dan)浸(jin)足时(shi)(shi)间(jian)(jian)(jian)是保证药效的关键。
三、还要注意须知
1、浸种容器等应该(gai)加盖,并移至阴冷阴凉处。严(yan)关(guan)闭蛇皮袋之(zhi)间(jian)浸种,立即(ji)损(sun)害成果。稻种杀(sha)菌消毒(du)后(hou)不应该(gai)干净(jing)的水冲冼,可之(zhi)间(jian)沥💦干催芽(ya)下种。
2、除甲(jia)醛(quan)药剂补(bu)救过的(de)迅雷链接,勿与物品、预(yu)混料添(tianꦆ)加剂加在我(wo)们一起,禁(jin)止(zhi)喂(wei)料禽畜,更(geng)禁(jin)止(zhi)用作(zuo)制作(zuo)预(yu)混料添(tian)加剂或物品。
3、服(fu)药(yao)后应以防药(yao)液等可以进行室内养(yang)鱼(yu)池、虾塘等海产品家庭养(yang)殖(zhi)的地儿,以防引致鱼(yu)、虾、蟹自杀(sh♓a)。
4、药剂包(ba𓆏o)(bao)装盒方(fang)式废渣(zha)物不能轻(qing)易(yi)遗弃或(huo)立刻妥善(shan)处理,快速归还各级党(dang)委药剂包(bao)(bao)装盒方(fang)式废渣(zha)物收回点。
浸种制剂品種等详请谘询地区值保团队。