施肥对不同来源大豆品种磷素积累分配的影响

Effect of Fertilizer Level on Phosphorus Accumulation and Distribution of Soybean Cultivars from Different Regions

以来源不同的12个大豆品种为试材,并按来源分成三组,分别为俄亥俄当代品种、辽宁当代品种和辽宁老品种,采用磷酸二铵种肥处理(0,150,300 kg.hm-2),探讨了施肥对不同来源大豆品种磷素积累分配的影响。辽宁老品种磷素积累速率最大,最大积累速率出现的时间,当代品种早,辽宁老品种晚。与对照相比,施肥提高了各品种的磷素积累速率,提高幅度,辽宁老品种最大,俄亥俄当代品种次之,辽宁当代品种最小。茎、叶片、荚皮及全株的磷素含量以俄亥俄当代品种最高,辽宁老品种次之,辽宁当代品种最低。施肥处理能促进大豆在生育前期对磷素的吸收,增加叶片、茎及全株的磷素含量,增幅以辽宁老品种最大,辽宁当代品种次之,俄亥俄当代品种最小。与对照相比,俄亥俄当代品种在150 kg.hm-2施肥量下的全株磷素含量最高,辽宁当代品种和辽宁老品种在300 kg.hm-2施肥量下全株磷素含量最高。

The experiment was carried out by using twelve soybean eultivars from different regions in 2006. And the eultivars were divided into three groups ： Ohio current cultivar （ OCC ）, Liaoning current eultivar （ LCC ） and Liaoning old eultivar （ LOC ）. Three level of 0,150 and 300 kg·ha^-1 were applied as starter fertilizer. The effect of fertilizer on phosphorus accumulation and distribution of soybean eultivars from different regions were discussed. LOC had the highest phosphorus accumtdation speed, and their appearance time was the latest among three group euhivars. Compared with the no fertilizer treatment,fertilizer could increase the aecumulation rate of phosphorus, and the inereasing range, LOC was biggest, then was OCC, LCC was smallest. OCC had the highest phosphorus contents in stem, Leaf and whole plant, then was LOC, and LCC the lowest. Compared with the no fertilizer treatment,in the early stage, fertilizer could accelerate the phosphorus absorption and increase the phosphorus content of stem,leaf and whole plant, and the increasing range from higher to lower was LOC, LCC and OCC. Compared with the no fertilizer treatment,the phosphorus content of OCC was the highest under the fertilizer level of 150 kg·ha^-1 ,and the phosphorus content of LCC and LOC were the highest under the fertilizer level of 300 kg · ha^-1 .