【摘要】 研究不同氮磷钾配比对红芸豆养分吸收规律及肥料利用率的影响,可为红芸豆大田种植和高效生产提供适量与合理施肥的理论依据。本试验是以‘英国红’红芸豆为试材的"3414"大田肥料试验。结果表明:红芸豆整个生育期N、P、K吸收量呈现出前期快速积累,中期增速趋缓,后期减少的趋势;叶片衰老掉落是养分吸收量减少的主要原因。处理6（N2P2K2）的施肥配比对红芸豆养分吸收量促进最大,其N、P、K的吸收量分别达到169.31、42.58、135.92 kg/hm²。红芸豆各器官的养分吸收各不相同,叶片呈现前期快速增长,中期趋向平稳,后期开始下降的趋势;茎的N吸收量呈"增加-降低-增加"的趋势,P、K吸收量呈先增加后下降的趋势;荚皮P、K前期迅速增加,但后期向籽粒转移而降低;籽粒和其相反,前期较低,后期远远大于荚皮。红芸豆各器官的养分分配动态表现为叶片中养分随着生育进程的推进逐渐降低,茎中养分呈先增加后降低的趋势,荚皮和籽粒中的养分呈增加趋势。红芸豆3种养分吸收是互相影响的,其相互依存度较高;每形成100 kg籽粒,N、P₂O₅、K₂O的吸收量分别为5.49、1.33、4.9 kg;平均养分吸收比例为1:0.24:0.89。N、P、K肥的肥料利用率与施肥量没有明显的规律,N、P、K肥的当季最高肥料利用率分别达到46%、11.04%和66.06%;N、P、K的相对吸收率分别达到100.25%、90.23%和115.21%。更多还原

【Abstract】 To provide a theoretical basis of appropriate and rational fertilization for field planting and highly-efficient production of red kidney bean,the authors studied the effects of different NKP rates on nutrient absorption and fertilizer use efficiency of red kidney bean.The "3414"field fertilizer experiment was conducted using‘Yingguohong’as material.The results showed that N,P,K absorptive amount by red kidneybean during the whole growth period had rapid accumulation in the early stage,slow increase in the middlestage and decrease in the late stage; the senescence and drop of leaf were the main reasons for the decreasingamount of nutrient absorption.The nutrient absorption of red kidney bean was promoted most under treatment6(N2P2K2),its absorption amount of N,P and K was 169.31,42.58 and 135.92 kg/hm2,respectively.Thenutrient absorption of all organs were different,that in leaves showed a rapid rate in the early period,remainedstable in the middle period and declined in the late period; N absorption amount in stems followed the rule of"increase-decrease-increase",P,K uptake increased first and then decreased; P,K uptake in pod shellincreased rapidly in the early stage,but were later transferred to pea and decreased; on the contrary,P,Kuptake in pea was low at first,but later much larger than that in pod shell.The dynamic nutrient distribution indifferent organs of red kidney bean showed that the nutrient distribution in leaves decreased gradually with thegrowth,that in stems increased first and then decreased,and that in pod shells and peas showed an increasingtrend.The absorption of the three nutrients in red kidney bean were interactive and the interdependence wasrelatively high; to form 100 kg peas,the absorption amount of N,P2O5 and K2O was 5.49,1.33 and 4.9 kg,respectively; the average nutrient absorption ratio was 1:0.24:0.89.The fertilizer use efficiency of NPK did nothave a significant rule with the fertilizer application amount,the maximum utilization rate of NPK reached46%,11.04% and 66.06%,respectively in the season,and the relative absorption rate was up to 100.25%,90.23% and 115.21%,respectively.更多还原