CAJ | 학술논문

以金山27为供试品种，在2个施钾水平( K2 O 150和300 kg/hm2)下，研究了施钾方式(一次性施入和钾肥后移)对高产春玉米钾素养分吸收、积累与转运的影响。结果表明，同一施钾水平下，钾肥后移春玉米钾素养分含量、积累量均低于钾肥一次性施入，后移量越多越明显，且前期差异更为显著。不同施钾方式间，除出苗期-拔节期外，不同生育阶段钾素养分吸收量为钾肥后移处理低于钾肥一次性施入处理，后移量越大差异越大，尤以拔节期-大喇叭口期为甚；钾肥吸收比例为钾肥后移处理在拔节期-大喇叭口期低于一次性施入处理，在大喇叭口期-吐丝期高于一次性施入处理。同一施钾水平下，吐丝前和吐丝后钾素养分吸收量及对籽粒贡献均为钾肥后移处理低于钾肥一次性施入处理，且后移量越多差异越明显，钾素养分吸收量在吐丝后差异较大，钾素积累对籽粒钾的贡献率在吐丝前差异较大。钾素后移处理叶转运量、转运率与一次性施钾处理差异不显著，茎转运量、转运率低于一次性施钾处理，后移量越多差异越明显。
이금산27위공시품충，재2개시갑수평( K2 O 150화300 kg/hm2)하，연구료시갑방식(일차성시입화갑비후이)대고산춘옥미갑소양분흡수、적루여전운적영향。결과표명，동일시갑수평하，갑비후이춘옥미갑소양분함량、적루량균저우갑비일차성시입，후이량월다월명현，차전기차이경위현저。불동시갑방식간，제출묘기-발절기외，불동생육계단갑소양분흡수량위갑비후이처리저우갑비일차성시입처리，후이량월대차이월대，우이발절기-대나팔구기위심；갑비흡수비례위갑비후이처리재발절기-대나팔구기저우일차성시입처리，재대나팔구기-토사기고우일차성시입처리。동일시갑수평하，토사전화토사후갑소양분흡수량급대자립공헌균위갑비후이처리저우갑비일차성시입처리，차후이량월다차이월명현，갑소양분흡수량재토사후차이교대，갑소적루대자립갑적공헌솔재토사전차이교대。갑소후이처리협전운량、전운솔여일차성시갑처리차이불현저，경전운량、전운솔저우일차성시갑처리，후이량월다차이월명현。
A maize cultivar,Jinshan 27,was used as the test material to study the effects of different potassium levels (K2O 0,150,300 kg/ha) and application methods (All the base fertilizer and postponing potassium applica-tion) on potassium absorption,accumulation and translocation in high-yield spring maize. The results showed that the potassium content and accumulation in plant of postponing potassium application were lower than all the base fertilizer,and more notable more postponing potassium,and its different was remarkable at early-growth. Except form germination to jointing stage,absorption amount of potassium each growth stage of postponing potassium application were lower than all the base fertilizer,and more notable more postponing potassium,and it was significant differences from jointing to large bell stage. Potassium absorption percentage of postponing potassium application were lower than all the base fertilizer from jointing to large bell stage,and it was contrary from large bell to silking stage. Potas-sium absorption amount and contribution rate to grain of postponing potassium application before silking and after silking were lower than all the base fertilizer,and more notable more postponing potassium,the different of potassium absorption amount were remarkable at silking,the different of contribution rate to grain were notable at before silking. Amount of translocation and translocation rate of leaf of postponing potassium application were not significant differ-ences,and which of stalk were lower than all the base fertilizer,and more significant more postponing potassium.