Jia Hengyi,Cheng Puhai,Mu Xinaning,et al.A Preliminary Study on the Effect of Medicago Sativa and Astragalus Adsurgens in Response to Nutrient Elements Applied[J].Research of Soil and Water Conservation,1994,1(03):120-127.
紫花苜蓿、沙打旺对施入营养元素效应的初步研究
- Title:
- A Preliminary Study on the Effect of Medicago Sativa and Astragalus Adsurgens in Response to Nutrient Elements Applied
- Keywords:
- bioss; grass; nutrient element concentration; absorbing capacity
- 摘要:
- 本文研究了黄土丘陵区紫花苜蓿与沙打旺在施入大量和微量营养元素后的生物量效应，以及植株中的化学元素的浓度和摄入量。结果表明：凡含有P素的试验处理，两种牧草地上部生物量均有显着增加，对紫花苜蓿根系增加的作用尤其突出。沙打旺施Mo地上部与根系生物量明显增加；各处理紫花苜蓿地上部K、Fe、Mo的浓度均高于沙打旺，而Ca、Mg、Mn、B的浓度几乎都低于沙打旺。含P处理紫花苜蓿的P浓度高于无P处理，同时伴随Zn浓度的降低。两种牧草由于施P虽然导致Zn浓度的降低，但Zn的摄入量却高于无P处理；施Mo处理地上部N、P、K、Cu、Fe、B、Mo的浓度。紫花苜蓿大于沙打旺，而摄入量则有相反趋势。
- Abstract:
- The present paper deals with a pot experimenton on the effect of Medicago sativa and Astragalus adsurgens in response to nutrient elements applied.The main results show that:there is a remarable response to P,NP,NPK applieed,and the root-biomass of Medicago sativa is more than all.The application of Mo promote the increment both above-ground and biomass,The concentrations of K,Fe,Mo,for above-ground of Medicago sativa are more than Astragalus adsurgens,but that of Ca,Mg, Mo, B are almost apposite trend,on the treatments of P applied,P comcentration of Medicago sativa more than treatments of P-dificent.In the mean while,Zn-concentration is decrease,but Zn absorbing capacity is increase.The concentrations of N、P、K 、Cu 、Zn 、Fe、B、Mo of above-ground part for sativa are more than that of Astragalus adsurgens,but the absorbing capacity of elements express the apposite tread.
参考文献/References:
[1] 中国科学院南京土壤所.土壤理化分析.上海科技出版社，1978
[2] 苏盛发.沙打旺农业出版社.1985
[3] 朱显漠.黄土高原的土壤与农业.农业出版社，1989
[4] J. J.莫尔维德特等.农业中微量营养元素.中国农业科学院土壤肥料所编译，农业出版社，1984
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备注/Memo
收稿日期:1994-8-30;改回日期:。