一、防早衰 huashengcongjiejiaqidaobaoguoqishixuyaoshuifeijiaoduodeshiqi,rushuifeigongyingbuzu,huizaochengzhizhufayubuliang,changshicha,yepianhuang,chuxianzaoshuai,zhishihuashenglvyemianjijianshao,guanghenenglixiajiang,zhizaodeyangfenshao,ganwuzhijileijianshao,xiangjiaguoyunshudesudujianman,yingxiangchanliang。因缺肥造成早衰的田塊,應在結莢到飽果期每667平方米根外噴施0.3%—0.4%磷酸二氫鉀加1%尿素溶液50千克,噴施時間最好在晴天下午4時以後,每隔10天噴一次,一般噴2—3次(ci),可(ke)有(you)效(xiao)的(de)補(bu)充(chong)養(yang)分(fen),防(fang)止(zhi)早(zao)衰(shuai)。因(yin)幹(gan)旱(han)造(zao)成(cheng)早(zao)衰(shuai)的(de)田(tian)塊(kuai),應(ying)及(ji)時(shi)補(bu)充(chong)灌(guan)水(shui),滿(man)足(zu)花(hua)生(sheng)對(dui)水(shui)分(fen)的(de)需(xu)求(qiu),促(cu)進(jin)營(ying)養(yang)物(wu)質(zhi)的(de)吸(xi)收(shou)與(yu)轉(zhuan)運(yun),提(ti)高(gao)幹(gan)物(wu)質(zhi)的(de)積(ji)累(lei),增(zeng)加(jia)產(chan)量(liang)。
二、防徒長 花生飽果期,營養生長逐漸減退,營養物質大量向莢果轉移,幹物質迅速積累。但因氣溫、陰雨、光guang照zhao及ji施shi用yong氮dan肥fei過guo量liang等deng多duo種zhong因yin素su的de原yuan因yin,致zhi使shi花hua生sheng莖jing葉ye徒tu長chang,過guo早zao封feng行xing,田tian間jian鬱yu閉bi,消xiao耗hao大da量liang的de養yang分fen,抑yi製zhi果guo實shi幹gan物wu質zhi的de積ji累lei,影ying響xiang產chan量liang。因yin此ci,對dui有you徒tu長chang趨qu勢shi的de花hua生sheng,要yao采cai取qu措cuo施shi,抑yi製zhi營ying養yang生sheng長chang,促cu進jin生sheng殖zhi生sheng長chang,對dui提ti高gao花hua生sheng的de產chan量liang有you明ming顯xian的de作zuo用yong。
三、防積水 花生具有“喜澇天,不喜澇地”和“地幹不下針,地濕不鼓粒”detedian。tebiezaihuashengshengchanghouqi,huashengtianjueduibunengjishui。ruyuyuhuolianyinyushiyaojishipaishui,fangzhijishui,shitianjianshiduguoda,zaochengjingyetuchang,turangtongqibuliang,yingxianggenxihejiaguoguli,bingyizaochengdalianglanguohuofaya,jiangdichanlianghepinzhi。zaidixiashuiweigaodedikuaizhongzhihuasheng,yidingyaoshishigaolongzaipeihuowahaopaishuigou,jiangdishuiwei。
四、防病蟲 花生後期最主要病害是葉斑病,受害葉片葉綠素被破壞,光和作用降低,造成早期落葉,影響幹物質積累和莢果成熟,一般減產15%—20%,嚴重時減產40%以上。在防治上,在發病以前就應噴灑1—2次1:1:300倍波爾多液進行預防。在發病初期,可選用50%多菌靈可濕性粉劑800倍液等進行防治。花生後期的主要害蟲是以蠐螬為主的地下害蟲,要及時防治。後期蚜蟲發生,當有蟲株率達到5%以上時,可用10%吡蟲啉可濕性粉劑噴霧防治。
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