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地點: 成都市
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2025年黑龍江省農(nóng)作物主要病蟲草鼠害長期發(fā)生趨勢預報
2025-02-17
10:01:00
來源:黑龍江省植檢植保站 閱讀量:18652
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【農(nóng)機網(wǎng) 熱點關注】 據(jù)省植檢植保站聯(lián)合省植物保護學會組織科研、教學及植保系統(tǒng)相關專家會商分析,預計2025年我省農(nóng)作物主要病蟲草鼠害總體為中等發(fā)生,發(fā)生程度重于上年,輕于常年。
一、重大遷飛性、雜食性害蟲
(一)發(fā)生趨勢
總體輕至偏輕發(fā)生。
1.草地螟輕發(fā)生,不排除蒙古國東部和俄羅斯遠東等境外蟲源大量遷入我省中西部地區(qū),造成局部為害的可能。
2.粘蟲偏輕發(fā)生,其中,二代粘蟲發(fā)生范圍廣,局部地塊偏輕發(fā)生;三代粘蟲在中南部和東部地區(qū)部分縣份個別草荒較重玉米地塊及谷糜和水稻地塊偏重發(fā)生。
3.土蝗偏輕發(fā)生,重點發(fā)生區(qū)域為中西部農(nóng)牧交錯區(qū)。
4.亞洲飛蝗在我省發(fā)生為害的可能性極低。
(二)預測依據(jù)
1.草地螟越冬蟲量少。2024年一代幼蟲僅在內(nèi)蒙古、河北、新疆地區(qū)發(fā)生,累計發(fā)生面積為33.0萬畝,較近5年均值減少23.7%,其中內(nèi)蒙古發(fā)生面積占比達94.7%,河北、新疆合計占比5.3%,為近年發(fā)生較輕年份。據(jù)全國監(jiān)測網(wǎng)越冬基數(shù)調(diào)查,總體越冬蟲量低于去年,為近年蟲量較低年份。
2.粘蟲蟲源基數(shù)偏低。據(jù)全國病蟲監(jiān)測網(wǎng)監(jiān)測,2024年北方大部三代粘蟲總體偏輕至輕發(fā)生,全國發(fā)生面積916萬畝,是2023年的2.6倍,但比常年均值減少約8成;回遷蟲量高于2023年,但低于常年。
3.土蝗基數(shù)低。2024年我省秋季越冬基數(shù)調(diào)查,土蝗越冬卵量全省平均0.09塊/平方米,卵粒數(shù)3.18粒/平方米,較上年分別減少0.32塊和6.97粒,為近10年最低年份;見卵地塊占總調(diào)查地塊比率為0.65%,分別低于上年、前年2.46和0.88個百分點。發(fā)生種類主要為亞洲小車蝗、大墊尖翅蝗、毛足棒角蝗、中華稻蝗、寬翅曲背蝗等。近年我省亞洲飛蝗未發(fā)生,秋季適生區(qū)也未查到越冬卵。
二、水稻病蟲害
(一)發(fā)生趨勢
總體為中等發(fā)生。
1.稻瘟病總體偏輕發(fā)生,地域間和品種間發(fā)生差異大,以后期穗頸瘟為主,存在區(qū)域偏重流行風險。
2.水稻二化螟偏輕發(fā)生,局部地塊中等發(fā)生,發(fā)生范圍將進一步向東部和北部擴大。水稻潛葉蠅、水稻負泥蟲中等發(fā)生,局部地塊偏重發(fā)生。
3.水稻立枯病、水稻綿腐病等苗床病害中等發(fā)生。水稻惡苗病偏輕發(fā)生,局部地塊偏重發(fā)生。
4.水稻紋枯病中等發(fā)生,中南部老稻區(qū)及東部稻區(qū)局部偏重發(fā)生。水稻細菌性褐斑病、水稻葉鞘腐敗病、水稻穗腐病等水稻生長中后期病害將重于常年。
5.水稻稻曲病總體偏輕發(fā)生,局部地塊偏重發(fā)生,呈發(fā)生范圍擴大、發(fā)生程度加重趨勢。稻螟蛉、稻蝗偏輕發(fā)生。稻飛虱輕發(fā)生,在東部稻區(qū)局部地塊蟲口密度超過防治指標。水稻干尖線蟲和稻搖蚊在個別縣份局部地塊會造成一定為害。
(二)預測依據(jù)
1.主要病害菌源豐富。水稻稻瘟病、水稻紋枯病、水稻葉鞘腐敗病、水稻穗腐病、水稻細菌性褐斑病等是我省水稻生產(chǎn)中的主要病害,水稻主產(chǎn)縣田間均有發(fā)生較重地塊;水稻稻曲病發(fā)生范圍不斷擴大,個別地塊發(fā)生較重,田間菌源充足,利于病害發(fā)生。
2.全省主栽水稻品種對稻瘟病整體抗性水平提升。近年我省持續(xù)在40個水稻主產(chǎn)縣份設立稻瘟病田間抗性監(jiān)測圃,通過田間發(fā)病監(jiān)測和實驗室對稻瘟病菌進行單孢分離,并分別接種測定398個品種的抗病性水平。結果表明,田間發(fā)病品種占比由2020年67.0%下降到14.3%;室內(nèi)接種測定發(fā)病風險等級較高水平的品種占比由84.1%下降到57.4%,但部分縣份發(fā)病風險等級較高品種仍有較大的種植面積。
3.二化螟、水稻潛葉蠅越冬基數(shù)較低。2024年秋季調(diào)查,水稻二化螟全省平均百稈活蟲0.96頭,比上年低0.5頭;水稻潛葉蠅平均1.2頭/平方米,比上年低1.08頭,均為近10年最低年份。
4.氣象條件總體利于病蟲害發(fā)生。氣象預報,2025年我省春季降水略多,5、6月份有階段性低溫,對水稻苗床病害、水稻潛葉蠅、負泥蟲等病蟲害發(fā)生有利;夏季氣溫正常略高,降水正常,時空分布不均,局部地區(qū)對病蟲害發(fā)生有利。
三、玉米病蟲害
(一)發(fā)生趨勢
總體為中等發(fā)生。
1.玉米螟總體偏輕發(fā)生,個別越冬基數(shù)較高的縣份中等發(fā)生,地域間和品種間發(fā)生程度差異大,西南部二代發(fā)生區(qū)個別地塊偏重發(fā)生。
2.玉米大斑病中等發(fā)生,東南部部分縣份偏重發(fā)生。
3.玉米灰斑病總體偏輕發(fā)生,中南部部分縣份中等發(fā)生;玉米絲黑穗病、玉米瘤黑粉病偏輕發(fā)生;玉米北方炭疽病、玉米鞘腐病、玉米小斑病、玉米褐斑病、玉米紋枯病、玉米莖基腐病、玉米穗腐病、玉米白斑病等病害發(fā)生呈上升趨勢。
4.金針蟲、地老虎、蠐螬等地下害蟲偏輕發(fā)生,局部地塊偏重發(fā)生;蒙古灰象甲、斑須蝽等苗期害蟲輕發(fā)生。玉米蚜蟲、玉米紅蜘蛛、雙斑螢葉甲偏輕發(fā)生,局部地塊偏重發(fā)生。玉米蛀莖夜蛾、柳蝙蛾、棉鈴蟲等潛在風險病蟲害在部分地區(qū)發(fā)生有上升趨勢。
(二)預測依據(jù)
1.主要害蟲越冬基數(shù)進一步下降。2024年秋季玉米螟扒稈調(diào)查,各地百稈活蟲加權平均為10.56頭,較上年下降4.48頭,為歷史最低年份;存活率平均為79.51%,較常年和上年分別下降8.94和1.76個百分點,且越冬蟲源發(fā)育質(zhì)量較上年略差。金針蟲、蠐螬、地老虎、螻蛄越冬基數(shù)為0.13頭~0.17頭/平方米,較上年低0.08頭~0.14頭,比近10年均值低0.1頭~0.17頭。
2.耕作栽培方式對病蟲害發(fā)生總體有利。近年推行的秸稈還田、免耕種植等耕作方式及長期大面積連作,利于田間病蟲源積累,為部分病蟲害發(fā)生創(chuàng)造了有利條件。雖然玉米田機械收獲及旋耕等農(nóng)事操作,破壞了秸稈、根茬等玉米螟主要越冬場所,但其野生寄主較普遍,仍可保持一定的玉米螟蟲源基數(shù)。近年來玉米種植密度加大,利于病蟲害發(fā)生。
3.氣象條件對病蟲害發(fā)生有利。氣象預報,后春旱澇分布不均,西南部存在春旱,對局部地區(qū)地下害蟲及苗期害蟲發(fā)生為害有利;夏季降水正常,時空分布不均,主要集中在東部,利于玉米大斑病等中后期病害發(fā)生。
四、大豆病蟲害
(一)發(fā)生趨勢
總體為中等發(fā)生。
1.大豆根腐病總體中等發(fā)生,北部及東部大豆主產(chǎn)區(qū)雨水偏多地區(qū)、低洼易澇地塊偏重發(fā)生。新型鐮孢菌根腐病發(fā)生區(qū)域將進一步擴大,局部偏重發(fā)生。
2.大豆食心蟲中等發(fā)生,個別縣份偏重發(fā)生。
3.大豆蚜蟲、大豆紅蜘蛛中等發(fā)生,局部地塊偏重發(fā)生。
4.大豆胞囊線蟲病、大豆菌核病局部偏重發(fā)生,大豆霜霉病、大豆灰斑病、大豆褐斑病、大豆細菌性斑點病、大豆紫斑病等中后期葉部病害部分縣份將重于常年。
5.蠐螬、地老虎、大豆根潛蠅、大豆薊馬、二條葉甲、蒙古灰象甲、網(wǎng)目擬地甲、圓跳蟲等地下害蟲與苗期害蟲總體偏輕發(fā)生,局部地塊偏重發(fā)生。苜蓿夜蛾等鱗翅目食葉害蟲在東部和北部大豆主產(chǎn)區(qū)個別地塊中等發(fā)生。雙斑螢葉甲、豆稈黑潛蠅偏輕發(fā)生,局部偏重發(fā)生,豆稈野螟、豇豆莢螟等新發(fā)害蟲呈上升趨勢。
(二)預測依據(jù)
1.蟲源基數(shù)較低。2024年秋季越冬基數(shù)調(diào)查,大豆食心蟲全省平均蟲食率為2.95%,較上年少0.05個百分點,較常年均值減少0.75個百分點;但超過防治指標(5%)的縣份13個,較上年增加3個,其中,最高的嘉蔭為12%,高于上年最高基數(shù)1.4個百分點。大豆蚜蟲、大豆紅蜘蛛2024年總體偏輕發(fā)生,近年來呈局部加重發(fā)生態(tài)勢。地下害蟲蠐螬、地老虎越冬基數(shù)分別為0.17頭/平方米、0.13頭/平方米,比上年分別低0.01頭和0.04頭,比近10年均值分別低0.16頭和0.21頭。
2.耕作栽培方式及氣象條件對病蟲害發(fā)生總體有利。近年我省大豆種植面積處于高位,重迎茬面積占比超過80%,加重病蟲害發(fā)生。氣象預報,后春旱澇分布不均,對局部地區(qū)地下害蟲、苗期害蟲及根腐病發(fā)生為害有利;夏季降水正常,時空分布不均,主要集中在東部,北部大豆產(chǎn)區(qū)降水略少,利于大豆蚜蟲、紅蜘蛛、食心蟲等發(fā)生為害。
五、小麥及馬鈴薯、蔬菜等經(jīng)濟作物主要病蟲害
1.馬鈴薯病蟲害總體偏重發(fā)生。馬鈴薯晚疫病是我省常年重發(fā)的主要病害,主栽品種大部分為感病品種,預計馬鈴薯晚疫病將偏重發(fā)生。馬鈴薯早疫病、軟腐病、瘡痂病、黑脛病、黑痣病、潰瘍病、枯萎病等病害發(fā)生整體呈上升趨勢。馬鈴薯瓢蟲及蠐螬、金針蟲等地下害蟲偏輕發(fā)生,個別地塊中等發(fā)生。
2.小麥病蟲害總體偏輕發(fā)生。小麥赤霉病中等發(fā)生;小麥根腐病、散黑穗病、麥蚜偏輕發(fā)生。
3.蔬菜病蟲害總體中等發(fā)生。蔬菜病害中等發(fā)生,老舊棚室、多年連作、栽培管理和防控措施不到位的設施蔬菜病害與降雨偏多、排水不暢的部分露地菜田病害將偏重發(fā)生。番茄以葉霉病、灰霉病、早疫病、晚疫病、病毒病為主,細菌性病害發(fā)生呈上升趨勢。黃瓜以霜霉病、角斑病、靶斑病、白粉病為主。辣椒以疫病、莖基腐病、黑斑病為主。菜豆以銹病、炭疽病、疫病、灰霉病為主。白菜以霜霉病、軟腐病、病毒病為主。甘藍以黑腐病、軟腐病為主。茄子以黃萎病、褐紋病、灰霉病為主。圓蔥以軟腐病、霜霉病為主。韭菜以灰霉病為主。芹菜以斑枯病、軟腐病、菌核病為主。豇豆以銹病、白粉病、炭疽病、枯萎病、根腐病為主。同時蔬菜根腐病及設施蔬菜根結線蟲病發(fā)生呈上升趨勢。
蔬菜蟲害總體中等發(fā)生,設施蔬菜以斑潛蠅、粉虱、蚜蟲、薊馬、葉螨、韭菜根蛆為主。露地蔬菜以小菜蛾、菜青蟲、黃條跳甲類、葉螨、薊馬、潛葉蠅、蘿卜蠅、蚜蟲、甘藍夜蛾、二十八星瓢蟲、豇豆莢螟等為主,部分地塊黃條跳甲類、薊馬、葉螨、小菜蛾等偏重發(fā)生。新傳入的番茄潛葉蛾發(fā)生區(qū)域將進一步擴大,個別縣份棚室及露地番茄重發(fā)生。
4.其它經(jīng)濟作物病蟲害總體中等發(fā)生,局部偏重發(fā)生。向日葵病蟲害以向日葵螟、菌核病、黃萎病、黑斑病、霜霉病為主。谷子病蟲害以谷瘟病、白發(fā)病為主。高粱病蟲害以高粱蚜、黑穗病為主。中藥材病蟲害以根腐病、銹病、菌核病、白粉病、葉斑病為主。紅小豆、蕓豆、綠豆病蟲害以銹病、細菌性疫病、白粉病、葉斑病和豇豆莢螟為主。
六、檢疫性病蟲害
目前我省發(fā)生分布的檢疫性病蟲害有馬鈴薯甲蟲、蘋果蠹蛾、稻水象甲、大豆疫霉根腐病、腐爛莖線蟲、瓜類果斑病、黃瓜黑星病、番茄潰瘍病、菜豆象、水稻白葉枯病等10種。我省對俄邊境線長、邊境口岸多,貿(mào)易往來頻繁,且近年臺風頻繁登陸我省,俄羅斯境內(nèi)馬鈴薯甲蟲等疫情入侵風險極大。在各地積極防控下,稻水象甲、大豆疫霉根腐病及蘋果蠹蛾等疫情得到穩(wěn)定控制。因雨水頻繁、灌溉水源共用等因素影響,水稻白葉枯呈逐步擴散蔓延態(tài)勢,發(fā)生區(qū)域有進一步擴大風險。瓜類果斑病、黃瓜黑星病、番茄潰瘍病、菜豆象等疫情呈零星發(fā)生分布。
七、農(nóng)田草害
我省目前旱田已形成土壤封閉+苗后莖葉除草、水田已形成“兩封一補”或“一封一殺”的化學除草技術模式,無論旱田還是水田,均以土壤封閉除草方式為主導。由于我省南北跨度大,不同生態(tài)區(qū)輪作制度、耕作栽培等管理方式不同;加之土壤封閉主要除草劑新品種較少,各地超過產(chǎn)品登記劑量范圍使用現(xiàn)象普遍,加快了雜草群落演替,區(qū)域性惡性難防雜草呈上升趨勢,為害加劇。據(jù)監(jiān)測,我省大部分稻區(qū)稗草種群對氰氟草酯、五氟磺草胺、二氯喹啉酸的抗性表現(xiàn)為中等至高抗,野慈姑、雨久花對吡嘧磺隆、芐嘧磺隆等磺酰脲類抗性較普遍;部分地區(qū)玉米田狗尾草、馬唐、稗草等對煙嘧磺隆、莠去津表現(xiàn)為高抗;大豆田反枝莧、鴨跖草、卷莖蓼、打碗花等對氟磺胺草醚抗性表現(xiàn)為中等至高抗。同時,氣象預報,春季氣溫略高,降水略多,5、6月份有階段性低溫,利于雜草發(fā)生,預計農(nóng)田草害將重于常年。
八、農(nóng)田鼠害
2024年42個縣份秋季鼠情監(jiān)測,平均鼠密度(百夾捕獲率)為4.46%,低于上年1.2個百分點,較近5年均值低1.6個百分點,但仍處于較高水平,鼠密度較高的縣份有饒河、嘉蔭、雞東、同江、湯原,分別為13.2%、13%、10.8%、10.6%、10%。近年來我省免耕面積增加,利于鼠害發(fā)生。2025年,預計未開展統(tǒng)一滅鼠的農(nóng)田區(qū)域鼠害將中等至偏重發(fā)生,為害將重于去年,重點發(fā)生在農(nóng)草、農(nóng)林交錯地帶、沿江(河)流域、部分水田區(qū)及蔬菜、中藥材等經(jīng)濟作物區(qū)。
植保部門將隨時關注我省氣候特征的變化,密切監(jiān)測病蟲發(fā)生動態(tài),加強會商研判,及時滾動訂正預測結論。病蟲發(fā)生趨勢預測僅供參考,更準確的預報請參考省植檢植保站臨近預報。
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