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植保無人飛機規范施藥技術
2024-06-09
08:57:44
來源:黑龍江省植檢植保站 閱讀量:20601
評論
【農機網 熱點關注】 一、精確劃定作業地塊
1.根據地塊復雜程度劃分。整齊劃一地塊可采取AB點模式,復雜地塊利用手持RTK精確劃定,更高效的可使用航拍機測繪。
2.劃定地塊時,要同時標明地塊中的障礙物,特別是電線、斜拉線等。
3.劃定地塊時,還應了解掌握作物長勢和生育期、種植密度等。
二、合理制定用藥方案
1.根據防治對象合理選擇藥劑。優先選擇混配性好的藥劑,兼顧多種防治對象,實現一噴多防。
2.選擇適宜劑型的農藥。適用于植保無人飛機航噴作業的農藥劑型:油劑、水劑、懸浮劑、干懸劑、水乳劑、微乳劑、水分散粒劑、乳油等;粉劑和可濕性粉劑則不適用。
3.使用航化專用助劑。農用無人飛機航化作業,均需按藥液量的0.5~1%的比例添加助劑,如激健、邁絲、邁潤、奇功等農藥助劑或邁飛、迪增、迪翔、農健飛等航化專用助劑,以減少飄移和蒸發,促進展著和吸收,有效提高防治效果。
三、合理制定作業計劃
1.根據作業量和時間要求,合理搭配大、小型無人飛機。
2.根據氣象預報安排作業時間,必要時采取夜航。(1)光照:強光照會加劇作物蒸騰及霧滴的蒸發,加大飄移并減少著液量,一般上午10時~下午3時最好不要施藥。(2)風力和風向。應采取側向風施藥或迎風施藥,不可采取順風施藥,風速>3.3m/s應停止化學除草作業,風速>4m/s應停止病蟲害防治作業。一般上午7時前,下午17時后風力較小,適宜無人飛機作業。(3)濕度和降雨。適宜的降水、濕度有利于藥效發揮,空氣相對濕度低于40%(易蒸發)時應停止施藥。(4)溫度低于15℃或超過30℃時不宜作業。
3.根據作物生育期合理安排,要避開花期施藥。
四、合理確定作業參數
1.施藥液量。根據作物生育時期、防治對象合理確定。每畝噴液量最少應在1升以上,土壤封閉除草應在1.5升以上,玉米中后期病蟲害防治應在2升以上。
2.飛行速度。飛行過快增加飄移,飛行過慢影響作業效率。飛行速度一般在1~6米/秒,最大不應超過7米/秒,比較理想范圍4~6米/秒。
3.飛行高度。一般在作物冠層上方2~6米,應根據機型、作物生長時期和田間狀況確定適宜的飛行高度。一般10-16升容量的電動多旋翼無人飛機可定在1~1.5米,20-30升容量的可定在2~3米,40-50升容量的可定在3-6米;30升容量的油動無人飛機一般定在2.5-3米
4.有效噴幅。有效噴幅要以國家級檢測中心如浙江方圓、南京機械化所出具的檢測報告標明的為準。實際作業中,應根據機型、飛行高度及靶標生物確定合理的噴幅。一般情況下,10-16升容量的電動多旋翼無人飛機在1.5米的飛行高度下,其合理噴幅為3~5米;20-30容量的,在2~3米的飛行高度下,其合理噴幅可以達到5~6米;40-50升容量的,在5米的飛行高度下,其合理噴幅可以達到6~11米。
5.噴頭的選擇。應根據防治對象及作業要求選擇適宜的噴頭。通常對于霧滴分布均勻性要求較高的作業,應優先選擇離心式噴頭;對穿透性要求較高的作業,應優先選擇壓力式噴頭。
6.噴幅偏移調整。無人飛機作業受風力及風向影響較大。一般情況下,當風速1.5~2米/秒條件下,無人飛機作業噴幅至少偏移0.5~1個噴幅(3~6米)。作業時要根據風向進行調整,以免漏噴或重噴。
五、施藥作業基本要求
1.應提前在配藥箱內配制母液,然后加入藥箱并混勻。
2.作業前應選好起降地點,起降地面要平、實。起降點安全距離要保持在6米以上。
3.作業時應提前確定飛行作業距離,一次飛行起落宜為一個往返航程。
4.作業時應保持直線飛行,飛行高度應保持一致,航線偏離最寬距離不應超過10厘米。
5.作業前應在飛行區域四周設立安全警示標記,并通知施藥區域鄰近地塊戶主和居住在附近的居民。應采取相應措施避免造成鄰近敏感作物的藥害、家畜中毒及對其它有益生物的傷害。作業人員使用遙控器或地面站系統操控無人機作業,并記錄作業情況,完成作業后,應將作業記錄匯總歸檔保存。
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