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湖北省早稻、再生稻直播生產(chǎn)技術(shù)指導(dǎo)意見

2022-04-01 09:48:19 來源：湖北省農(nóng)業(yè)農(nóng)村廳 閱讀量：16313 評論

導(dǎo)讀：根據(jù)湖北省氣候條件和水稻生產(chǎn)特點，可因地制宜、科學(xué)有序開展直播生產(chǎn)，確保完成年度生產(chǎn)目標(biāo)任務(wù)?，F(xiàn)對早稻、再生稻直播生產(chǎn)提出以下技術(shù)指導(dǎo)意見。

　　【農(nóng)機網(wǎng) 地方農(nóng)機】當(dāng)前正值我省早稻、再生稻播種育秧關(guān)鍵時期，受3月中旬強對流天氣和階段性低溫陰雨天氣影響，全省早稻、再生稻播種育秧進度較往年同期偏慢1-2成。根據(jù)我省氣候條件和水稻生產(chǎn)特點，可因地制宜、科學(xué)有序開展直播生產(chǎn)，確保完成年度生產(chǎn)目標(biāo)任務(wù)?，F(xiàn)對早稻、再生稻直播生產(chǎn)提出以下技術(shù)指導(dǎo)意見。
 
　　(一)緊盯農(nóng)時，以直代插。我省早稻、再生稻適宜播期為3月中下旬至4月上旬。因農(nóng)時緊張不能適期播種的早稻、再生稻，可以采用短生育期品種進行直播生產(chǎn)，播期應(yīng)該控制在4月10日前后為宜。一般要日平均氣溫穩(wěn)定通過12℃以上，抓住“冷尾暖頭”搶晴播種。
 
　　(二)精選良種，精細整地。選擇分蘗能力強、耐肥抗倒、生育期適中的早中熟高產(chǎn)優(yōu)質(zhì)品種，早稻可采用生育期105天左右品種，再生稻可選用生育期120天左右品種。雜交稻畝播2-3公斤；常規(guī)稻可適當(dāng)加大播量，根據(jù)種子質(zhì)量，早稻畝播8-10公斤，再生稻畝播5-6公斤，力爭以多穗保證產(chǎn)量。整地要做到“早、淺、平、實”，“早”是指及時翻耕，“淺”是指翻耕作業(yè)不宜過深，“平”是指全田高低落差不宜超過3厘米，“實”是指畦面不宜過軟、泥頭不宜過爛，努力實現(xiàn)一播全苗。
 
　　(三)科學(xué)直播，確保質(zhì)量。因地制宜、因時制宜選擇不同機械開展直播生產(chǎn)，盡量避免使用人工無序撒播。機播前根據(jù)實際情況調(diào)整播量，密切注意排種情況，盡量勻速播種，防止重播漏播。拋灑型水稻直播無人機飛行高度3-4米，作業(yè)幅寬不低于4米；條播型水稻直播無人機播種行距20-30厘米，飛行高度30-40厘米，種子掉落行內(nèi)最大幅寬不超過8厘米。播后1-3天封閉除草，降低雜草基數(shù)，后期根據(jù)雜草發(fā)生情況適時進行補殺。

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