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夏至已至,農作物生長旺盛,田間管理需加強
2021-06-21
11:23:54
來源:農機網整理發布 閱讀量:25600
評論
【農機網 熱點關注】 今天是二十四節氣之一的夏至。夏至日是北半球晝最長、夜最短的一天,夏至后中國大部分地區氣溫較高,日照充足,農作物生長很快。
此時的降水對農業產量影響很大,有“夏至雨點值千金”之說。這時長江中下游地區降水一般可滿足作物生長的需求。多數情況,“夏至”期間,正值長江中下游、江淮流域梅雨,頻頻出現暴雨天氣,容易形成洪澇災害,甚至對人民生命財產造成威脅,應注意加強防汛工作。
農事活動
夏至前后,淮河以南早稻抽穗揚花,田間水分管理上要足水抽穗,濕潤灌漿,干干濕濕,既滿足水稻結實對水分的需要,又能透氣養根,保證活熟到老,提高籽粒重。夏播工作要抓緊掃尾,已播的要加強管理,力爭全苗。出苗后應及時間苗定苗,移栽補缺。棉花一般已經現蕾,營養生長和生殖生長兩旺,要注意及時整技打杈,中耕培土,雨水多的地區要做好田間清溝排水工作,防止澇漬和暴風雨的危害。
過了夏至,中國南方大部分地區農業生產因農作物生長旺盛,雜草、病蟲迅速滋長蔓延而進入田間管理時期,高原牧區則開始了草肥畜旺的黃金季節。夏至節氣是華南東部全年雨量最多的節氣,往后常受副熱帶高壓控制,出現伏旱。為了增強抗旱能力,奪取農業豐收,在這些地區,搶蓄伏前雨水是一項重要措施。
夏至農事之畜牧農事:
1、加強家畜梅雨期間飼養管理:生豬欄舍宜保持干燥,欄內糞便清掃外運。牛只下雨期間宜關養,防止被雨淋濕,降低體溫而引發感冒。
2、家禽類做好防霉工作。要做好雞球蟲病預防和雞、鴨飼料防霉工作。一是飼料原料防止被雨打濕;二是飼料分期分批加工,保持配合飼料新鮮;三是畜主進料應少量多次購進。
夏至農事之大田農事:
1、夏至前后,夏播工作要抓緊掃尾,已播的要加強管理,力爭全苗。
2、夏至時節各種農田雜草和莊稼一樣生長很快,不僅與作物爭水爭肥爭陽光,而且是多種病菌和害蟲的寄主,因此,抓緊中耕鋤地是夏至時節極重要的增產措施之一。
夏至農事之蔬菜農事:
1、做好清溝排水。遇連續下雨應加強清溝排水,降低地下水位與田間濕度,盡量減少蔬菜積水時間,促進根系正常生長。
2、采用避雨栽培。防止土壤濕度過大,可有效減少病害發生,確保蔬菜高產穩產。有條件可結合使用防蟲網,在棚四周蓋隔離網紗,可做到基本不用
殺蟲劑。
3、加強田間管理。長期田間積水而早衰的蔬菜地要搶晴翻耕,松土除草。
4、加強病蟲害防治。及時合理用藥,選準藥劑、用藥時間、濃度和方法。
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