正確應用化控技術。目前部分棉田已化控2—3次。當前在苗期化控的基礎上,在初蕾期7-8pianyeshijinxinghuakong,duileiqiwenchang,dahaofengchanjiaziyoulianghaodezuoyong,huakongshiyaogenjumianhuapinzhong,turangfeili,mianhuachangshiquedingsuojieanyongliang,yibanshengchangzhengchangmiantianmuyongsuojiean1.5-2克,加水30公斤,機力噴霧。針對縮節胺特別敏感的品種,在化控時一定要少量多次,防止一次控死。
適時灌水追肥。對於棉花來說如果頭水過早,營養生長過旺,現蕾就少,過晚落蕾嚴重。灌水原則是:頭水晚,二水趕,三水、四水看苗情。蕾期結合灌水追肥兩次,始蕾期畝追尿素2—3公斤、磷酸二氫鉀0.5公斤。盛蕾期畝追尿素3—4公斤、磷酸二氫鉀0.5公斤。
加強蟲害綜合防治。近期蟲害主要是棉蚜、hongzhizhuchengdianweihai,zuihaocaiyongdianpianfashengdianpianfangzhi,gebiedikuaidamianjifashengde,yingcaiyongzhuanxingshachongjijinxingfangzhi,yanjindamianjipensahuaxuenongyao,yifangshashangtiandi,zaochengmiantianshengtaipinghengbeipohuai。
binghai。xiangebiedikuaiqingkuxingkuweibingyousuofasheng,ruolingxingfashengbingzhuyingjishibachutianwai,jinxingshaohui,zuilixiangfangzhifangfashipenshiyemianfei,cushimianzhushengchangjianzhuang,zengqiangkangbingxing,jianshaobinghaifasheng。
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