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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:16278
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導(dǎo)讀:根據(jù)湖北省氣候條件和水稻生產(chǎn)特點(diǎn),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(duì)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(jī)網(wǎng) 地方農(nóng)機(jī)】當(dāng)前正值我省早稻、再生稻播種育秧關(guān)鍵時(shí)期,受3月中旬強(qiáng)對(duì)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(jìn)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(diǎn),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)。現(xiàn)對(duì)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(shí),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(shí)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(jìn)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(xì)整地。選擇分蘗能力強(qiáng)、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(shí)”,“早”是指及時(shí)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(shí)”是指畦面不宜過軟、泥頭不宜過爛,努力實(shí)現(xiàn)一播全苗。
(三)科學(xué)直播,確保質(zhì)量。因地制宜、因時(shí)制宜選擇不同機(jī)械開展直播生產(chǎn),盡量避免使用人工無序撒播。機(jī)播前根據(jù)實(shí)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(jī)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(jī)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(shí)進(jìn)行補(bǔ)殺。
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