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2BFML-5型固定壟免耕播種機(jī)設(shè)計(jì)與試驗(yàn)
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    摘要:

    針對(duì)我國(guó)西北地區(qū)一年一熟綠洲農(nóng)業(yè)區(qū)固定壟保護(hù)性耕作缺乏配套播種機(jī)具的問(wèn)題,設(shè)計(jì)了2BFML-5型固定壟免耕播種機(jī)。分析和確定了開(kāi)溝器、修壟犁等關(guān)鍵部件的結(jié)構(gòu)參數(shù)。采用尖角式開(kāi)溝器,具有較強(qiáng)的破茬碎土能力,并容易實(shí)現(xiàn)種肥分施;修壟犁在播種時(shí)不僅能對(duì)邊行有效覆土,而且對(duì)壟床起到較好的修復(fù)作用。該機(jī)能一次完成破茬、開(kāi)溝施肥、播種、覆土鎮(zhèn)壓和修壟等項(xiàng)作業(yè)。田間試驗(yàn)表明:2BFML-5型固定壟免耕播種機(jī)入土能力強(qiáng),在田間秸稈覆蓋量為3682kg/hm2條件下有較強(qiáng)的田間通過(guò)性能。和傳統(tǒng)播種機(jī)相比,田間出苗率提高6.25%、產(chǎn)量提高2.7%,較好地滿足了西北地區(qū)固定壟保護(hù)性耕作技術(shù)發(fā)展的需求。

    Abstract:

    According to the problem of lacking suitable planter for permanent raised bed (PRB) in one crop a year oasis agricultural region of northwest China, a 2BFML-5 no-till planter for PRB was designed, the parameters of key components for opener, reshaping plough etc. were analyzed and decided. By means of adopting sharp-angle opener, the new planter could cut stubble and break clod, what was more, 5 cm of vertical depth difference between seeder and fertilizer could be achieved easily. The reshaping plough could not only cover seeder row effectively, but also reshape the old bed perfectly. The planter could finish stubble cutting, ditching and fertilizing, seeding, covering, compacting and reshaping bed in one pass. Experimental results showed that under straw cover of 3682kg/hm2, the planter, which was effective in entering the soil, anti-blocking and increasing emergence rate by 6.25% and yield by 2.7% respectively, could meet the developing requirement of PRB in northwest China.

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朱國(guó)輝,李問(wèn)盈,何進(jìn).2BFML-5型固定壟免耕播種機(jī)設(shè)計(jì)與試驗(yàn)[J].農(nóng)業(yè)機(jī)械學(xué)報(bào),2008,39(2):51-54.[J]. Transactions of the Chinese Society for Agricultural Machinery,2008,39(2):51-54.

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