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華北黃淮墑情改善 需抓好玉米苗期管理 防范旱澇急轉(zhuǎn)

2024-06-27 09:14:50 來源：全國農(nóng)業(yè)技術(shù)推廣服務(wù)中心 閱讀量：17329 評論

導(dǎo)讀：總體看，華北黃淮墑情改善，土壤墑情不足至重旱站點(diǎn)均減少，但黃淮南部墑情過多站點(diǎn)顯著增多。

　　【農(nóng)機(jī)網(wǎng) 熱點(diǎn)關(guān)注】 據(jù)6月24日全國農(nóng)技中心土壤墑情監(jiān)測，華北黃淮0-20cm土壤相對含水量均值為75.31%，較6月21日監(jiān)測上升2.37個百分點(diǎn)；20-40cm土壤相對含水量均值為81.88%，與6月21日監(jiān)測結(jié)果基本持平。從0-20cm土層看，50.51%監(jiān)測站點(diǎn)墑情適宜，9.23%站點(diǎn)墑情不足，9.59%站點(diǎn)干旱，15.59%站點(diǎn)重旱，15.08%站點(diǎn)墑情過多；從20-40cm土層看，54.87%監(jiān)測站點(diǎn)墑情適宜，9.83%站點(diǎn)墑情不足，7.55%站點(diǎn)干旱，11.99%站點(diǎn)重旱，15.76%站點(diǎn)墑情過多。總體看，華北黃淮墑情改善，土壤墑情不足至重旱站點(diǎn)均減少，但黃淮南部墑情過多站點(diǎn)顯著增多。
 
　　目前，干旱區(qū)域主要分布在河北中部、山西中部及南部局地、山東北部及南部局地等未灌溉農(nóng)田和無灌溉條件的旱地。墑情過多區(qū)域主要分布在黃淮南部近期降水偏多區(qū)域。
 
　　據(jù)氣象預(yù)報，未來10天，華北黃淮大部有降水，其中江蘇及安徽大部降水量達(dá)100-250mm，河北西南部、山西大部、河南西北部降水較少。蘇皖及河南中南部需防范旱澇急轉(zhuǎn)，受淹地塊要及時疏通排灌溝渠，確保雨后積水順暢排出，保證田間不存積水，低洼田塊可用排水泵等機(jī)具強(qiáng)排積水，減輕漬澇危害。洪水退后立即扶苗洗苗，可選用0.5%的尿素和0.2%的磷酸二氫鉀葉面噴施追肥，促進(jìn)作物恢復(fù)生長。另外，雨后應(yīng)加強(qiáng)玉米銹病、葉斑病及玉米螟等病蟲害的監(jiān)測防治。

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