搡老女人老妇人老太婆,少妇被粗大的猛烈进出96影院
,他的舌头探进蜜源毛毛虫说
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地點: 呼和浩特市
開展時間: 2025-03-26
舉辦單位: 內蒙古農牧業機械行業協會、內蒙古自治區經濟發展與研究促進會
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地點: 合肥市
開展時間: 2025-03-27
舉辦單位: 上海市貿促會、安徽省貿促會
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地點: 無錫市
開展時間: 2025-03-29
舉辦單位: 中國機電產品流通協會、無錫市機床工具行業協會、無錫市工業和信息化局
2020年黃淮海夏玉米生產技術意見
2020-06-08
10:25:22
來源:全國農業技術推廣服務中心 閱讀量:19078
評論
【農機網 熱點關注】 黃淮海地區是我國夏播玉米優勢產區之一,常年夏玉米種植面積2億畝左右。當前,黃淮海地區冬小麥正由南向北陸續成熟收獲,夏玉米即將搶時播種。針對今年黃淮海地區的自然資源條件和資源稟賦,農業農村部玉米專家指導組會同全國農業技術推廣服務中心,制定了2020年黃淮海夏玉米生產技術意見。
一是調整布局,優化結構。根據市場需求并結合各地生產實際,調整和優化玉米種植結構,因地制宜發展青貯玉米、鮮食玉米,開展玉米與其他作物(大豆、花生等)間套作等。
二是優選良種,精選種子??茖W選用適宜當地種植、熟期適宜、耐密抗倒、抗逆廣適、高產穩產的玉米良種。黃淮海北部地區要選擇熟期早、耐旱性強的品種;黃淮海南部地區選用中熟期、抗銹病、耐高溫強的品種。籽粒直收的地塊,選用早熟、抗倒、脫水快、適宜機械籽粒直收的品種。選購高質量包衣種子,確保滿足機械單粒精量播種要求。
三是搶時早播,一播全苗。前茬作物收獲后及時搶播夏玉米,中南部爭取在6月15日前、北部在6月20日前完成播種,采用機械精量
播種機60厘米等行距貼茬直播。墑情不足播種時,要及時澆“蒙頭水”,確保一播全苗。
四是合理密植,優化群體。根據品種特性及生產條件等確定適宜種植密度。一般地塊畝保苗4000—4500株,耐密品種和高產田適當提高密度。對種植密度偏大、生長過旺地塊,以及風災倒伏頻發地區,可在拔節期至小喇叭口期酌情噴施植物生長調節劑,提高植株抗倒伏能力,預防倒伏。
五是防控病蟲,化學除草。加強玉米病蟲害特別是草地貪夜蛾等突發性、暴食性、流行性病蟲害動態監測和預報預警,開展綠色防控。玉米播后、出苗前及時進行化學封閉除草,或在苗期(三葉一心至五葉期)選用適宜
除草劑進行苗后除草。規范噴藥時機、方法和用量,避免重噴、漏噴和發生藥害,提高除草效果。
六是科學管理,肥水高效。前茬小麥秸稈還田地塊以施氮肥為主,配合一定數量鉀肥,并補施適量微肥,其中1/3氮肥和全部鉀肥、微肥隨播種側深施,其余2/3氮肥于小喇叭口期前后機械側深施(10厘米左右)。也可采用種、肥異位同播,選用高質量專用控釋肥一次底深施。施肥后,若土壤墑情不足應及時澆水,有條件的推廣水肥一體化,減少化肥使用,提高水肥利用效率。
七是加強監測,防災減災。加強干旱、高溫、臺風等災害監測預警。關鍵生育時期遭遇高溫天氣和嚴重干旱,應及時進行灌溉;遭遇澇漬,應及時排水。通過種植耐熱品種和及時灌溉,以及葉面噴施微肥等措施,防御高溫熱害。
八是適時收獲,高產優質。玉米完熟后(籽粒乳線消失、黑層出現)再收獲,并在不影響下茬小麥播期情況下,適時晚收。機械收獲果穗或直收籽粒,收獲后及時晾曬或烘干,以防霉變,提高產量和品質。
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