2.適(shi)期(qi)播(bo)種(zhong)移(yi)栽(zai)。根(gen)據(ju)當(dang)地(di)水(shui)稻(dao)生(sheng)長(chang)季(ji)節(jie)和(he)品(pin)種(zhong)生(sheng)育(yu)特(te)性(xing),選(xuan)擇(ze)適(shi)宜(yi)的(de)播(bo)栽(zai)期(qi),調(tiao)節(jie)開(kai)花(hua)期(qi),使(shi)水(shui)稻(dao)開(kai)花(hua)期(qi)避(bi)開(kai)高(gao)溫(wen)季(ji)節(jie)。如(ru)高(gao)溫(wen)伏(fu)旱(han)區(qu)可(ke)以(yi)采(cai)取(qu)提(ti)早(zao)播(bo)種(zhong),利(li)用(yong)旱(han)育(yu)秧(yang)提(ti)早(zao)抽(chou)穗(sui)以(yi)避(bi)開(kai)水(shui)稻(dao)開(kai)花(hua)期(qi)的(de)高(gao)溫(wen)季(ji)節(jie)。也(ye)可(ke)選(xuan)用(yong)早(zao)熟(shu)或(huo)遲(chi)熟(shu)品(pin)種(zhong),避(bi)開(kai)開(kai)花(hua)期(qi)遇(yu)到(dao)高(gao)溫(wen),這(zhe)樣(yang)可(ke)以(yi)避(bi)免(mian)或(huo)減(jian)輕(qing)夏(xia)季(ji)高(gao)溫(wen)危(wei)害(hai)。
3.灌guan水shui降jiang溫wen。水shui稻dao開kai花hua期qi遇yu到dao高gao溫wen季ji節jie時shi,可ke采cai用yong稻dao田tian灌guan深shen水shui和he日ri灌guan夜ye排pai的de方fang法fa,或huo實shi行xing流liu水shui灌guan溉gai,增zeng加jia水shui稻dao蒸zheng騰teng量liang,降jiang低di水shui稻dao冠guan層ceng和he葉ye片pian溫wen度du,減jian輕qing高gao溫wen對dui結jie實shi影ying響xiang。必bi要yao時shi在zai中zhong午wu前qian後hou水shui稻dao開kai穎ying前qian,或huo閉bi穎ying後hou,每mei畝mu用yong清qing水shui200-250公斤噴灑,一般可使溫度降低1-2℃,濕度增加10%-15%,也可減輕高溫對結實影響。
4.合he理li施shi肥fei。在zai肥fei料liao管guan理li上shang合he理li提ti早zao施shi肥fei,可ke促cu進jin分fen蘖nie早zao生sheng快kuai發fa,降jiang低di後hou期qi冠guan層ceng含han氮dan量liang,加jia快kuai生sheng育yu進jin程cheng,增zeng加jia後hou期qi耐nai旱han和he抗kang高gao溫wen能neng力li。並bing實shi行xing根gen外wai噴pen施shi磷lin鉀jia肥fei,如ru0.2%的磷酸二氫鉀溶液,增強稻株對高溫的抗性,改善水稻結實率。
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