水(shui)(shui)(shui)(shui)稻(dao)恶苗病是我区水(shui)(shui)(shui)(shui)稻(dao)上最(zui)主要(yao)的(de)种(zhong)(zhong)(zhong)传(chuan)病害,由区农(nong)技(ji)(ji)中(zhong)心(xin)抽(chou)样送检(jian)(jian)经(jing)市农(nong)技(ji)(ji)中(zhong)心(xin)检(jian)(jian)测(ce),今(jin)年我区水(shui)(shui)(shui)(shui)稻(dao)主要(yao)种(zhong)(zhong)(zhong)植品种(zhong)(zhong)(zhong)稻(dao)种(zhong)(zhong)(zhong)恶苗病平均带菌(jun)率为(wei)3.6%,最(zui)高(gao)8%,带菌(jun)率较去年略(lve)低。但鉴于去年田(tian)间发(fa)病普遍(bian),今(jin)年恶苗病仍存在较大(da)流行风🅰(feng)险。稻(dao)种(zhong)(zhong)(zhong)药剂处(chu)(chu)理(li)是控制水(shui)(shui)(shui)(shui)稻(dao)种(zhong)(zhong)(zhong)传(chuan)病害最(zui)经(jing)济(ji)有效(xiao)的(de)措施,为(wei)此希望各街镇(zhen)及广大(da)种(zhong)(zhong)(zhong)植户(hu)引起高(gao)度重视,认真做好(hao)水(shui)(shui)(shui)(shui)稻(dao)种(zhong)(zhong)(zhong)子处(chu)(chu)理(li)工作,为(wei)今(jin)年水(shui)(shui)(shui)(shui)稻(dao)高(gao)产丰收(shou)打下(xia)良好(hao)的(de)基(ji)础。具(ju)体技(ji)(ji)术要(yao)求如下(xia):
一、晒种选种
播前选(x𝓡uan)晴好天气(qi)晒种(zhong)1~2天,并精选(xuan)种(zhong)子,除去秕粒(li)病粒(li)、减少菌(jun)源,以提高种(zhong)子的(de)发芽势,增强(qiang)秧苗(miao)抗病能力。
二(er)、药(yao)物净化处理清(qing)洁消毒技术(shu)应用
1、解决方式:
每4kg稻种(zhong)(zhong)(亩用(yong)种(zhong)(zhong)量)用(yong)浸(jin)种(zhong)(zhong)药(yao)剂9ml,采(cai)用(yong)二(er)次稀释法,先加少量水调成(cheng)浆糊状,然后再加清(qing)水6kg稀释,配成(cheng)药(yao)液(ye)(ye)。将选过的稻种(zhong)(zhong)4kg(亩用(yong)种(zhong)(zhong)量)浸(jin)入配成(cheng)的药(yao)液(ye)(ye)中搅拌均匀,以药(yao)液(ye)(ye)高出种(zhong)(zhong🃏)子2-3cm为(wei)宜。(若稻种(zhong)(zhong)数量多可按上述相应比例配制(zhi))
2、浸(jin)(jin)种时(shi)间(jian):日平(ping)均气温低于20℃,浸(jin)(jin)种时(shi)间(jian)应为60小时(shi),20℃以上,浸(jin)(jin)种时(sh🔥i)间(jian)应在48小时(shi)左(zuo)右,具体根据气温变化(hua)掌(zhang)握好时(shi)间(jian),但浸(jin)(jin)足时(shi)间(jian)🌳是保证药效的(de)关键。
三、提前准备要点
1、浸种贮罐是需要加盖,并置入阴凉处背光(guang)处。严阻(zu)止蛇皮袋会浸种,如(ru)不后果实际༺(ji)效果。稻种清洗(xi)后不是需要绿水冲冼,可(ke)会沥干催(cui)芽施(shi)肥。
2、化剂工(gong)艺过的种子网(wang),勿与蛋(dan)白质(zhi)食物、猪(zhu)饲料(liao)厂贴(tie)到分着,严禁喂(w🤪ei)养禽畜,更(♔geng)严禁来工(gong)艺猪(zhu)饲料(liao)厂或食物。
3、用药治疗后应杜(du)绝药液等随便排(pai)进渔塘(tang)、虾塘(tang)等渔🍌业生态养殖的部分(fen),杜(du)绝发生鱼、虾、蟹阵亡(wang)。
4、药(yao)剂(ji)杀菌剂(ji)包(bao)(bao)裝废品物不得当任意(𒈔yi)舍弃或进(jin)行应对,立刻交给(ji)县级(ji)药(yao)剂(ji)杀菌剂ꦓ(ji)包(bao)(bao)裝废品物收(shou)购(gou) 点。
浸种化学剂类型等详请询问本地人值保部们。