財(cái)經(jīng) > 滾動(dòng)新聞 > 正文

字號(hào)：大 中 小

夏季棉花謹(jǐn)防低溫冷害

發(fā)布時(shí)間：2014-09-04 07:32:06 來(lái)源：農(nóng)民日?qǐng)?bào) 作者：佚名責(zé)任編輯：羅伯特

　　俗話說(shuō)，“三伏不熱，五谷不結(jié)”。強(qiáng)調(diào)農(nóng)作物生長(zhǎng)必須有足夠的溫度和光照。近日來(lái)湖北棗陽(yáng)市一直是低溫連陰雨天氣，氣溫在19℃~26℃之間，此時(shí)正是棉花開(kāi)花授粉的關(guān)鍵時(shí)期，農(nóng)業(yè)局專(zhuān)家提醒廣大棉農(nóng)提防棉花遭受低溫冷害。

　　在棉花開(kāi)花授粉期間，若遇日平均氣溫3天以上低于23℃的低溫過(guò)程，或日平均氣溫24小時(shí)驟降3℃、最高氣溫驟降5℃，會(huì)導(dǎo)致棉花授粉和受精受阻，結(jié)實(shí)率降低，嚴(yán)重威脅棉花生產(chǎn)安全。

　　為預(yù)防上述低溫冷害，農(nóng)業(yè)專(zhuān)家建議，棉花等旱作物要清溝排漬，改善土壤的通透性。利用無(wú)雨時(shí)段，對(duì)棉花葉面噴施磷酸二氫鉀，以防根系與功能葉早衰，提高結(jié)實(shí)率。晁贏

分享到 0

熱圖一覽

<div   id="lcu8lt2"   class="ConTwo_Tex01">
  <a href="http://www.zhonghuixigou.com/money/photo/20160713/13430.shtml" target="_blank"><img src="http://image.finance.china.cn/page/2012/0118/93_21019261_20160713094559.jpg" width="158" height="118" /></a>
  <p><a href="http://www.zhonghuixigou.com/money/photo/20160713/13430.shtml" target="_blank">老公簽證出問(wèn)題女子獨(dú)自度蜜月 逗趣照片留念</a></p>
</div>

<div   id="lcu8lt2"   class="ConTwo_Tex01">
  <a href="http://www.zhonghuixigou.com/money/photo/20160711/13425.shtml" target="_blank"><img src="http://image.finance.china.cn/page/2012/0118/93_21019264_20160713094559.jpg" width="158" height="118" /></a>
  <p><a href="http://www.zhonghuixigou.com/money/photo/20160711/13425.shtml" target="_blank">暴雨中的婚禮：沒(méi)有賓客，有你就好</a></p>
</div>

<div   id="lcu8lt2"   class="ConTwo_Tex01">
  <a href="http://www.zhonghuixigou.com/money/photo/20160711/13426.shtml" target="_blank"><img src="http://image.finance.china.cn/page/2012/0118/93_21019267_20160713094559.jpg" width="158" height="118" /></a>
  <p><a href="http://www.zhonghuixigou.com/money/photo/20160711/13426.shtml" target="_blank">PS天才與明星“合照”以假亂真</a></p>
</div>

<div   id="lcu8lt2"   class="ConTwo_Tex01">
  <a href="http://www.zhonghuixigou.com/money/photo/20160712/13427.shtml" target="_blank"><img src="http://image.finance.china.cn/page/2012/0118/93_21019270_20160713094559.jpg" width="158" height="118" /></a>
  <p><a href="http://www.zhonghuixigou.com/money/photo/20160712/13427.shtml" target="_blank">紐約出現(xiàn)“曼哈頓懸日”景觀 民眾扎堆目睹</a></p>
</div>

<div   id="lcu8lt2"   class="ConTwo_Tex01">
  <a href="http://www.zhonghuixigou.com/money/photo/20160713/13429.shtml" target="_blank"><img src="http://image.finance.china.cn/page/2012/0118/93_21019273_20160713094559.jpg" width="158" height="118" /></a>
  <p><a href="http://www.zhonghuixigou.com/money/photo/20160713/13429.shtml" target="_blank">上海一高校280名男生為全系唯一女生慶生</a></p>
</div>

高清圖集賞析

<div   id="lcu8lt2"   class="ConThree_Tex01">
  <a href="http://www.zhonghuixigou.com/money/photo/20160711/13425.shtml" target="_blank"><img src="http://image.finance.china.cn/page/2012/0118/93_21019361_20160713094110.jpg" width="198" height="148"/></a>
  <p><a href="http://www.zhonghuixigou.com/money/photo/20160711/13425.shtml" target="_blank">暴雨中的婚禮：沒(méi)有賓客，有你就好</a></p>
</div>

<div   id="lcu8lt2"   class="ConThree_Tex01">
  <a href="http://www.zhonghuixigou.com/money/photo/20160711/13426.shtml" target="_blank"><img src="http://image.finance.china.cn/page/2012/0118/93_21019364_20160713094110.jpg" width="198" height="148"/></a>
  <p><a href="http://www.zhonghuixigou.com/money/photo/20160711/13426.shtml" target="_blank">PS天才與明星“合照”以假亂真</a></p>
</div>

<div   id="lcu8lt2"   class="ConThree_Tex01">
  <a href="http://www.zhonghuixigou.com/money/photo/20160712/13427.shtml" target="_blank"><img src="http://image.finance.china.cn/page/2012/0118/93_21019367_20160713094110.jpg" width="198" height="148"/></a>
  <p><a href="http://www.zhonghuixigou.com/money/photo/20160712/13427.shtml" target="_blank">紐約出現(xiàn)“曼哈頓懸日”景觀 民眾扎堆目睹</a></p>
</div>

<div   id="lcu8lt2"   class="ConThree_Tex01">
  <a href="http://www.zhonghuixigou.com/money/photo/20160713/13429.shtml" target="_blank"><img src="http://image.finance.china.cn/page/2012/0118/93_21019370_20160713094110.jpg" width="198" height="148"/></a>
  <p><a href="http://www.zhonghuixigou.com/money/photo/20160713/13429.shtml" target="_blank">上海一高校280名男生為全系唯一女生慶生</a></p>
</div>