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2019年甘蔗生產(chǎn)后期管理技術(shù)指導(dǎo)意見(jiàn)

2019-11-26 14:42:31 來(lái)源：農(nóng)業(yè)農(nóng)村部新聞辦公室 閱讀量：15844 評(píng)論

　　【農(nóng)機(jī)網(wǎng) 熱點(diǎn)關(guān)注】
 
　　農(nóng)業(yè)農(nóng)村部糖料專(zhuān)家指導(dǎo)組
 
　　全國(guó)農(nóng)業(yè)技術(shù)推廣服務(wù)中心
 
　　2019年，我國(guó)南方主產(chǎn)蔗區(qū)前期干旱較重，降雨相對(duì)較少，甘蔗成熟早。針對(duì)這種情況，全國(guó)農(nóng)業(yè)技術(shù)推廣服務(wù)中心會(huì)同農(nóng)業(yè)農(nóng)村部糖料專(zhuān)家指導(dǎo)組，研究制定了《2019年甘蔗生產(chǎn)后期管理技術(shù)指導(dǎo)意見(jiàn)》。
 
　　一、改善通風(fēng)透光條件
 
　　甘蔗生產(chǎn)后期，要及時(shí)剝除枯葉，改善田間通風(fēng)透光條件，減少病蟲(chóng)害發(fā)生危害。對(duì)田間濕度大，長(zhǎng)勢(shì)郁蔽和病蟲(chóng)害嚴(yán)重的田塊要更多剝除枯葉，剝下的枯葉盡可能帶出蔗田。剝?nèi)~的標(biāo)準(zhǔn)以每條莖保留9-10片新葉為宜。
 
　　二、做好抗災(zāi)減災(zāi)工作
 
　　甘蔗生產(chǎn)后期遭受臺(tái)風(fēng)的，要做好減災(zāi)工作，對(duì)倒伏的甘蔗植株要及時(shí)捆蔗扶正，在植株的三分之二高處，用繩子或枯葉將兩行甘蔗捆成人字型，或?qū)⑾噜彽膸字旮收崂Τ梢皇垢收岢手绷顟B(tài)，保持繼續(xù)生長(zhǎng)。扶正的甘蔗恢復(fù)生長(zhǎng)15天后，再解開(kāi)繩子。
 
　　三、預(yù)防甘蔗低溫霜凍
 
　　甘蔗生產(chǎn)后期容易遭受低溫霜凍。對(duì)海拔較高或緯度偏北、往年受低溫霜凍的蔗區(qū)，進(jìn)入成熟期后要注意關(guān)注天氣預(yù)報(bào)，在霜凍前適當(dāng)灌水，保持田間濕度，降低霜凍危害。
 
　　四、把握時(shí)機(jī)適時(shí)收獲
 
　　甘蔗進(jìn)入生產(chǎn)后期，葉色由青綠轉(zhuǎn)變?yōu)榭蔹S，青葉片數(shù)逐漸減少，枯葉片數(shù)由上而下逐漸增加，表明甘蔗已經(jīng)成熟。甘蔗收獲要以先熟先收砍、晚熟晚收砍為原則，先收早熟品種，再收中熟品種，后收晚熟品種。對(duì)于留養(yǎng)宿根的蔗地，在大寒過(guò)后進(jìn)行收砍較為適宜，有利于蔗芽的萌發(fā)出土。
 
　　五、入土低砍保護(hù)蔗篼
 
　　推廣入土收獲，甘蔗收砍要采用鋒利的小鋤，實(shí)行快鋤低砍，入土5厘米進(jìn)行收砍，以降低宿根發(fā)芽部位，減少蔗樁破裂。
 
　　六、大力提倡蔗葉還田
 
　　甘蔗收獲后，對(duì)田間的蔗葉，晾曬一周，待蔗葉基本干枯，采用拖拉機(jī)配套蔗葉粉碎機(jī)對(duì)田間蔗葉進(jìn)行粉碎還田，增加土壤肥力；在沒(méi)有蔗葉粉碎機(jī)械的蔗區(qū)，可人工對(duì)蔗葉進(jìn)行清理，隔行覆蓋在蔗溝上。
 
　　七、加強(qiáng)宿根甘蔗管理
 
　　對(duì)12月份前收砍的甘蔗，要對(duì)留養(yǎng)的宿根進(jìn)行施肥培土和地膜覆蓋。在宿根根部，每畝施用尿素15-20千克，然后進(jìn)行培土，覆土厚度4-6厘米；覆土后，要及時(shí)進(jìn)行地膜覆蓋，好進(jìn)行地膜全覆蓋，確保蔗田土壤溫度，促進(jìn)蔗蔸蔗芽萌發(fā)。

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