水稻(dao)(dao)恶苗(miao)(miao)病(bin📖g)(bing)是我区水稻(dao)(dao)上最(zui)主要(yao)的(de)种(zhong)(zhong)(zhong)传(chuan)病😼(bing)(bing)害(hai),由区农(nong)技中心(xin)抽样送检(jian)经(jing)市农(nong)技中心(xin)检(jian)测(ce),今(jin)(jin)年我区水稻(dao)(dao)主要(yao)种(zhong)(zhong)(zhong)植品种(zhong)(zhong)(zhong)稻(dao)(dao)种(zhong)(zhong)(zhong)恶苗(miao)(miao)病(bing)(bing)平均带(dai)菌率为3.6%,最(zui)高8%,带(dai)菌率较(jiao)去(qu)年略低。但鉴于去(qu)年田(tian)间发病(bing)(bing)普遍(bian),今(jin)(jin)年恶苗(miao)(miao)病(bing)(bing)仍(reng)存(cun)在较(jiao)大流行风险。稻(dao)(dao)种(zhong)(zhong)(zhong)药剂处理是控(kong)制(zhi)水稻(dao)(dao)种(zhong)(zhong)(zhong)传(chuan)病(bing)(bing)害(hai)最(zui)经(jing)济有效的(de)措施(shi),为此希望各街镇(zhen)及广大种(zhong)(zhong)(zhong)植户引起(qi)高度(du)重视,认真做好水稻(dao)(dao)种(zhong)(zhong)(zhong)子处理工(gong)作,为今(jin)(jin)年水稻(dao)(dao)高产丰收打下(xia)良好的(de)基(ji)础。具体技术(shu)要(yao)求如下(xia):
一、晒种选种
播前选晴好(hao)天气晒(shai)种🌸(z൲hong)1~2天,并精选种(zhong)子,除去秕粒(li)病粒(li)、减少菌源,以提高种(zhong)子的发(fa)芽势,增(zeng)强秧(yang)苗抗病能(neng)力。
二、除(chu)甲醛(quan)药♔(yao)剂(ji)除(chu)理(li)酒(jiu)精消毒(du♑)技艺(yi)
1、补救方式:
每4kg稻种(zhong)(zhong)(亩(mu)用种(zhong)(zhong)量(liang)(liang))用浸(jin)种(zhong)(zhong)药剂9♏ml,采(cai)用二次稀释法(fa),先加少量(liang)(liang)水调成浆糊状(zhuang),然后再(zai)加清水6kg稀释,配(pei)成药液(ye)。将(jiang)选过的稻种(zhong)(zhong)4kg(亩(mu)用种(zhong)(zhong)量(liang)(liang))浸(jin)入配(pei)成的药液(ye)中搅拌均匀,以药液(ye)高出种(zhong)(zhong)子2-3cm为(wei)宜。(若稻种(zhong)(zhong)数量(liang)(liang)༒多可按上述相(xiang)应比例(li)配(pei)制)
2、浸(jin)种(zhong)时间(jian)(jian)(jian):日平均气(qi)温低于20℃,浸(jin)种(zhong)时间(jian)(jian)(jian)应为(wei)60小时,20℃以(yi)上,浸(jin)种(zhong)时间(jian)(jian)(jian)应在48小时左右,♉具(ju)体(ti)根据气(qi)温变(bian)化掌握好时间(jian)(jian)(jian),但浸(jin)足时间(jian)(jian)(jian)是保证药(yao)效的关键。
三、注重重大事项
1、浸种(zhong)贮(zhu)罐可(ke)以(yi)盖,并放(fang)置于(yu)阴冷(leng)遮(zhe)光处。严不可(ke)用蛇(she𝐆)皮袋(dai)可(k𝐆e)以(yi)立即浸种(zhong),免得会影响(xiang)效率。稻种(zhong)空气消毒后不可(ke)以(yi)池水冲冼,可(ke)可(ke)以(yi)立即沥(li)干催芽施肥。
2、的药剂操作过的图片种子(zi),勿(wu)与(yu)吃物(wu)(wu)、伺料(liao)摆到(dao)一切,不容许(xu)(xu)喂料(liao)禽畜,更不容许(🐟xu)(xu)用以精加工(gong)伺料(liao♊)或食物(wu)(wu)。
3、用药指导后(hou)应逃避(bi)药液(ye)等会直接倾倒垃圾(ji)养鱼(yu)池、虾(xia)(xia)塘等海产(chan)养殖业的部位,逃避(bi)可能会导致(zhi)鱼(yu)、虾(xia)(xia)、蟹(xie)窒息死(si)亡💧。
4、药(yao)剂杀菌剂内(nei)包装(zhuang)方式(shi)丢去物禁(jin)止直接丢去或随意治理,即时(shi)交给(ji)各(ge)个等(deng)级药(yao)剂杀菌剂内(nei)包装(zhuang)方式(shi)丢去物收旧(j꧒iu)点。
浸种去除剂的计量的品种等详请咨询公司当地人植物保护部们。