1、清溝排水,防止棉田受漬。疏通、加深棉田四周邊溝,疏理壟溝,如果田塊較長,要注意開通中溝。“三溝”與棉田外圍的主溝相通,確保排水暢通。
2、抓住晴好天氣,適墒中耕培土。雨停轉晴,待棉田基本收幹後,及時中耕鬆土促通氣,並結合壅根培土,促使根係下紮,提高棉株抗旱、抗倒能力。
3、摘除葉枝,減少養分消耗。棉花進入蕾期有1-2geguozhihou,jiehezhonggengpeitu,jishiquchuyezhi,jikejianqingtianjianyinbi,youkejianshaoyangfendexiaohao,gaishanmiantiandetongfengtouguangtiaojian,kongzhiyingyangshengchang,shiyangfenxiangmianzhushengzhiqiguanzhuanyi,jianshaoyouleituoluo。
4、化(hua)學(xue)調(tiao)控(kong),防(fang)止(zhi)棉(mian)株(zhu)徒(tu)長(chang)。雨(yu)水(shui)充(chong)沛(pei),極(ji)有(you)利(li)於(yu)棉(mian)株(zhu)的(de)營(ying)養(yang)物(wu)質(zhi)向(xiang)營(ying)養(yang)器(qi)官(guan)輸(shu)送(song),導(dao)致(zhi)主(zhu)莖(jing)節(jie)間(jian)距(ju)加(jia)大(da),株(zhu)高(gao)增(zeng)長(chang)加(jia)快(kuai),營(ying)養(yang)生(sheng)長(chang)與(yu)生(sheng)殖(zhi)生(sheng)長(chang)比(bi)例(li)失(shi)調(tiao),加(jia)劇(ju)了(le)棉(mian)株(zhu)的(de)徒(tu)長(chang)。雨(yu)停(ting)轉(zhuan)晴(qing)後(hou),除(chu)深(shen)中(zhong)耕(geng)控(kong)長(chang)外(wai),還(hai)可(ke)通(tong)過(guo)噴(pen)施(shi)助(zhu)壯(zhuang)素(su)來(lai)防(fang)止(zhi)徒(tu)長(chang),用(yong)量(liang)為(wei)每(mei)畝(mu)2-5毫升兌水30公斤對棉株幼嫩部分噴霧。
5、jiaqiangbingchongfangzhi。yushuiduo,yachongfashengliangjiada,yifakuweibing。keyongdishasidenggaoxiaonongyaojinxingfangzhi。duiyukuweibingfangzhi,zhuyaoshizaiyuhoujiaqiangfeishuiguanli,zengqiangmianzhukangnixing。
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