ICS65.020.20CCSB05 43湖 南 省 地 方 標 準DB43/T2379—2022棉花-油菜輪作雙直播技術規程Technicalcodeofcotton-raperotationdoubledirectseeding20222022070820221008湖南省市場監督管理局發布1····················································································································21····················································································································2·····································································································3···········································································································4··············································································································5··································································································5.1········································································································5.2··············································································································5.3··············································································································5.4········································································································5.5·····································································································5.6········································································································5.7········································································································6··································································································6.1········································································································6.2··············································································································6.3··············································································································6.4·····································································································6.5········································································································7··············································································································11111122233333344447.1生產檔案········································································································47.2投入品檔案·····································································································47.3檔案管理········································································································48參考文件··············································································································4附錄A（規范性）生產檔案···························································································5I目 次前言 Ⅲ前 言GB/T1.1—20201請注意本文件的某些內容可能涉及專利。本文件的發布機構不承擔識別專利的責任。本文件由湖南省農業農村廳提出。本文件由湖南省農業標準化技術委員會歸口。本文件起草單位：湖南省棉花科學研究所、中國農業科學院棉花研究所、湖南生物機電職業技術學院。本文件主要起草人：李飛、梅正鼎、曾球、趙瑞元、郭莉莉、李彩紅、何叔軍、賀云新、李玉芳、李亞兵、吳碧波。棉花-油菜輪作雙直播技術規程本文件規定了棉花-油菜輪作雙直播的茬口銜接、棉花直播栽培管理、油菜直播栽培管理等要求。本文件適用于兩熟區域的棉花-油菜輪作雙直播栽培。（GB4407.11GB4407.22NY/T3638 DB43/T1550棉花化學農藥減施增效技術規程3術語和定義3術語和定義下列術語和定義適用于本文件。3.1棉花-油菜輪作rotationofcottonandrape指在同一田塊上有順序地在季節間輪換種植棉花和油菜的種植方式。4茬口銜接530不晚于10月25日，湘南播種時間不晚于10月30日。5棉花直播栽培管理25cm1～2旋耕完畢，用滅生性或芽前除草劑全田噴施，封除雜草。110d20cmGB4407.1播前7d～15d，選晴好天氣，將待播的種子置于背風向陽干燥處，晾曬2～3d；包衣種子不需曬種。播種每公頃75000株～105000株。選擇晴天，用棉花專用旋耕施肥播種機實行作壟、開溝、播種、施肥、壓實一次性完成，壟寬（包溝）1.52m，每穴播籽1粒～2粒，覆土1.5cm～2.0cm，行距76cm。播種后及時清溝，保持水路暢通。棉花出苗后缺株率不超過10％，不補苗、不間苗、不定苗；超過10％，視出苗情況補種、補苗。棉花出苗后缺株率不超過10％，不補苗、不間苗、不定苗；超過10％，視出苗情況補種、補苗。5.2.5播后除草播種后25d左右，視田間雜草種類和生長量，進行苗期除草。施肥中等肥力棉田，每公頃推薦肥料用量為N150kg～180kg、P2O575kg～90kg，K2O150kg～210kg。種肥同播，種肥間隔不低于5cm，肥料在種子側下方10cm～15cm處。899％800～10001.0％～2.01～272臺～3臺果枝時化控1次，每公頃縮節胺用量7.5g～15.0g。田間見第一朵白花后1周內化控1次，每公頃縮節胺用量22.5g～30.0g。5.4.3化學封頂9～10250g/L540mL～810mL270mL～540mL100cm。參照DB43/T1550執行。50％450g～600g40％900mL～1200mL。根據田間的吐絮情況及時采收；棉花脫葉率不低于95％，吐絮率不低于90％，可進行一次性采收。耕深20cm。應用旋耕施肥播種機進行旋耕、開溝起壟，壟寬1.8m～2.0m。耕深20cm。應用旋耕施肥播種機進行旋耕、開溝起壟，壟寬1.8m～2.0m。00B2播前5d～7d曬種，選晴好天氣，將待播的種子置于背風向陽干燥處，晾曬1d～2d。播種每公頃450000株～600000株。人工播種，每公頃種子用量3.5kg～4.5kg；機械免耕直播或無人機飛播，每公頃種子用量4.5～6.0kg。6.2.3播后除草播種后即進行封閉除草或在油菜苗期進行選擇性化學除草。6.2.4清溝排水播種后，開好廂溝、腰溝和圍溝，廂溝深不小于25cm，圍溝腰溝不小于20cm。施肥N150kg～180kgP2O545kg～60kg、K2O45kg～75kg、10kg～12kg；氮肥、鉀肥總量的60％和全部磷肥、硼肥用作基肥，20％～30％氮肥用于冬前提苗，10％～20％的氮肥和40％的鉀肥作薹肥。參照NY/T3638執行。全田90％以上的角果變黃，部分呈淺褐色，分枝抬起，主枝頂端角果用手能輕易捏開，全株籽粒變色時，可采用機械一次性收獲。7生產檔案7生產檔案。。檔案由專職人員進行管理，隨時整理并逐年歸檔，保存期限不少于3年。8參考文件DB43/T1729機采棉生產技術規程HNZ172 A.2施肥記錄表A.3化控記錄