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當(dāng)前小麥田間管理指導(dǎo)意見(jiàn)

2023-02-06 10:28:17 來(lái)源： 江蘇省蘇州市吳江區(qū)農(nóng)業(yè)農(nóng)村局 閱讀量：16125 評(píng)論

導(dǎo)讀：近日，江蘇省蘇州市吳江區(qū)農(nóng)業(yè)農(nóng)村局土肥站技術(shù)人員深入田間地頭，現(xiàn)場(chǎng)指導(dǎo)農(nóng)戶做好小麥冬春季節(jié)田間管理技術(shù)指導(dǎo)。

　　【農(nóng)機(jī)網(wǎng) 熱點(diǎn)關(guān)注】為確保冬小麥正常生長(zhǎng)和安全越冬，近日，江蘇省蘇州市吳江區(qū)農(nóng)業(yè)農(nóng)村局土肥站技術(shù)人員深入田間地頭，現(xiàn)場(chǎng)指導(dǎo)農(nóng)戶做好小麥冬春季節(jié)田間管理技術(shù)指導(dǎo)，為來(lái)年優(yōu)質(zhì)高產(chǎn)奠定基礎(chǔ)。
 
　　一是因苗補(bǔ)肥促弱苗
 
　　對(duì)于基肥施用過(guò)量、營(yíng)養(yǎng)過(guò)剩、麥苗旺長(zhǎng)的地塊可不追施氮肥，防止莖蘗數(shù)過(guò)高、群體過(guò)大、后期倒伏減產(chǎn)；對(duì)于基肥施用不足、晚播弱小、群體偏少、預(yù)期穗數(shù)可能不足，或者發(fā)生凍藥害、有明顯脫力落黃現(xiàn)象的麥田盡早追施返青肥，確保臨界期養(yǎng)分需求。一般每畝施用尿素 5～7 公斤。機(jī)條播的要做到深施蓋土，防止揮發(fā)損失或降雨造成徑流流失。
 
　　二是化控鎮(zhèn)壓控旺苗
 
　　對(duì)群體過(guò)大、有倒伏風(fēng)險(xiǎn)的旺長(zhǎng)麥田，要在拔節(jié)前適時(shí)鎮(zhèn)壓控旺或化控，提高防倒伏能力。對(duì)秸稈還田量大、播種質(zhì)量差、播后鎮(zhèn)壓不到位、表層疏松的田塊，也可在拔節(jié)前盡早選擇氣溫回升且無(wú)霜凍、無(wú)露水的晴天進(jìn)行適度鎮(zhèn)壓，以促進(jìn)根土密接。
 
　　三是及早落實(shí)倒春寒預(yù)防補(bǔ)救措施
 
　　小麥拔節(jié)后尤其是拔長(zhǎng)兩節(jié)后，遇到氣溫0℃以下霜凍，主莖和大分蘗幼穗就會(huì)凍死凍傷。返青后要密切關(guān)注天氣變化，低溫寒流來(lái)臨前對(duì)缺墑麥田及時(shí)灌水，可改善土壤墑情，調(diào)節(jié)近地層小氣候，緩沖地表溫度變幅，減輕凍害發(fā)生。在小麥凍害發(fā)生后2～3天要及時(shí)剝查幼穗受凍程度，根據(jù)受凍程度迅速適當(dāng)增施恢復(fù)肥。

上一篇： 農(nóng)業(yè)農(nóng)村部：新修訂的《孵化機(jī)》等16項(xiàng)農(nóng)業(yè)機(jī)械推廣鑒定大綱公布

下一篇：唐仁?。赫准?、整體推進(jìn)，把增產(chǎn)潛力轉(zhuǎn)化為現(xiàn)實(shí)產(chǎn)量

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