
一(yi)、品種(zhong)選擇:選擇高產(chan)優質潛力大、抗(kang)逆(ni)性強(qiang)的雜(za)(za)交品種(zhong)如邯(han)雜(za)(za)429、邯(han)雜(za)(za)301;或選用常規品種(zhong)如冀228、邯(han)7860。
二、種(zhong)(zhong)(zhong)(zhong)子處理:包(bao)括播(bo)前曬種(zhong)(zhong)(zhong)(zhong)和發(fa)(fa)(fa)芽試驗(yan)。播(bo)種(zhong)(zhong)(zhong)(zhong)前曬種(zhong)(zhong)(zhong)(zhong)3-5天(tian),促進種(zhong)(zhong)(zhong)(zhong)子后熟,以提(ti)高種(zhong)(zhong)(zhong)(zhong)子發(fa)(fa)(fa)芽率和發(fa)(fa)(fa)芽勢,不要(yao)(yao)在(zai)水泥地(di)(di)或(huo)柏油路(lu)上曬種(zhong)(zhong)(zhong)(zhong)。隨機(ji)取(qu)種(zhong)(zhong)(zhong)(zhong)100粒或(huo)200粒,搞(gao)好芽率試驗(yan),以確定播(bo)種(zhong)(zhong)(zhong)(zhong)量大小。三(san)、精細整(zheng)(zheng)地(di)(di)、足墑(di)(di)播(bo)種(zhong)(zhong)(zhong)(zhong):土壤墑(di)(di)情(qing)直接(jie)影響棉花出苗,若墑(di)(di)情(qing)不足可(ke)在(zai)棉花播(bo)種(zhong)(zhong)(zhong)(zhong)前半個(ge)月,洇地(di)(di)造墑(di)(di)。整(zheng)(zheng)地(di)(di)要(yao)(yao)求深耕25-30厘米,地(di)(di)面平整(zheng)(zheng),上虛下實,無(wu)明(ming)暗(an)坷垃。
三、適時(shi)(shi)播(bo)(bo)種(zhong):當(dang)5厘米地溫穩(wen)定(ding)通過14℃,短期上升到16℃,搶(qiang)在冷末暖頭(tou)播(bo)(bo)種(zhong),播(bo)(bo)期一般在4月(yue)20日(ri)-25日(ri)左(zuo)右(you)為(wei)宜(yi)。 四、播(bo)(bo)量:雜交棉畝(mu)用種(zhong)1公斤(jin),常規棉畝(mu)用種(zhong)2公斤(jin)。五、播(bo)(bo)種(zhong)深度(du):播(bo)(bo)種(zhong)深度(du)以(yi)3-4厘米為(wei)宜(yi)。六(liu)、查苗(miao)(miao)補苗(miao)(miao):出苗(miao)(miao)后及時(shi)(shi)查苗(miao)(miao)補苗(miao)(miao),對(dui)缺(que)較多(duo)的地塊(kuai)采取催芽補種(zhong),對(dui)缺(que)苗(miao)(miao)較少的地塊(kuai)采用芽苗(miao)(miao)移栽。