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洪澤：加強(qiáng)水稻分蘗期管理 構(gòu)建高質(zhì)量群體

2024-07-15 08:55:17 來(lái)源：江蘇省淮安市洪澤區(qū)農(nóng)機(jī)推廣站 閱讀量：14808 評(píng)論

導(dǎo)讀：洪澤區(qū)農(nóng)機(jī)推廣站指導(dǎo)各鎮(zhèn)(街)密切關(guān)注天氣變化，加強(qiáng)水稻分蘗期田間管理。

　　【農(nóng)機(jī)網(wǎng) 地方農(nóng)機(jī)】 當(dāng)前，洪澤水稻處于分蘗期，較去年同期生育進(jìn)程相當(dāng)、群體苗數(shù)少1.2萬(wàn)/畝，機(jī)插稻生育進(jìn)程(5.9葉)同比快0.2葉，群體莖蘗數(shù)(11.9萬(wàn)/畝)同比多0.2萬(wàn)/畝，但仍處于正常水平下適宜莖蘗范圍內(nèi)。洪澤區(qū)農(nóng)機(jī)推廣站指導(dǎo)各鎮(zhèn)(街)密切關(guān)注天氣變化，加強(qiáng)水稻分蘗期田間管理。
 
　　1、加強(qiáng)水漿管理 當(dāng)前田間土壤普遍較爛，可脫水爽田1～2天，促進(jìn)根系生長(zhǎng)發(fā)育，再進(jìn)行薄水層灌溉，促分蘗早生快發(fā)。在群體莖蘗數(shù)達(dá)到預(yù)期穗數(shù)的80%左右時(shí)及早斷水?dāng)R田，開好豐產(chǎn)溝，提高擱田效果；遇強(qiáng)降水需及時(shí)排除田間積水，防止長(zhǎng)時(shí)間深水導(dǎo)致僵苗不發(fā)，做好露田通氣輕擱田。
 
　　2、酌情補(bǔ)施平衡肥 遲播遲栽、目前群體偏小的田塊，在前期基蘗肥施用基礎(chǔ)上，可適當(dāng)補(bǔ)施平衡肥，爭(zhēng)取適期夠苗。施肥時(shí)以淺水層為佳，施肥1～2天后自然落干，減少肥料流失。部分受強(qiáng)降雨影響出現(xiàn)積澇或短時(shí)漬澇，肥力流失嚴(yán)重的低洼和排水不暢田塊，可少量多次補(bǔ)施氮肥，直到苗情轉(zhuǎn)化。
 
　　3、及時(shí)防治病蟲草害 當(dāng)前部分播栽早和未開展封閉用藥田塊雜草發(fā)生量較多，要根據(jù)田間草相選好藥劑，用足藥量和水量，選擇早晚時(shí)間段打藥，確保防效。密切關(guān)注病蟲害發(fā)生動(dòng)態(tài)，重點(diǎn)抓好水稻紋枯病、稻瘟病、螟蟲等專業(yè)化防治。

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