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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 來源:江蘇省淮安市洪澤區(qū)農(nóng)機(jī)推廣站 閱讀量:14845 評論

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/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/畝)同比多0.2萬/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)降水需及時排除田間積水,防止長時間深水導(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,爭取適期夠苗。施肥時以淺水層為佳,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,選擇早晚時間段打藥,確保防效。密切關(guān)注病蟲害發(fā)生動態(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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