应用^(15)N研究小麦花生两熟制氮肥分配方式对小麦、花生产量及N肥利用率的影响  

EFFECT OF DISTRIBUTION MODES OF NITROGENOUS FERTILIZER ON WHEAT AND PEANUT YIELDS AND THE NITROGENOUS FERTILIZER UTILIZATION RATIO UNDER THE WHEAT PEANUT CROPPING SYSTEM

作　　者：王才斌[1] 成波[1] 孙秀山[1] 郑亚萍[1] 陈殿绪[1] 

机构地区：[1]山东省花生研究所,山东青岛266100

出　　处：《核农学报》2002年第2期98-102,共5页Journal of Nuclear Agricultural Sciences

基　　金：山东省科委 (94 )第 8号

摘　　要：在小麦花生两熟制条件下 ,全年氮肥两作 3次施用 (小麦基肥、追肥和花生基肥 )氮素利用率为 3 2 52 % ,一作两次施用 (小麦基肥和追肥 )氮素利用率为 3 7 0 1 % ,但前者土壤残留多 ,损失少 ,氮肥回收率为 69 2 4% ,较后者高 1 2 0 3个百分点。且前者有利于小麦、花生产量的形成 ,是小麦花生两熟制适宜的施肥方式。小麦当茬氮肥利用率为 1 6 80 %～ 3 5 63 %。夏直播花生当茬及前茬小麦基肥和追肥 (拔节期 )的氮肥利用率分别为 2 3 70 %、6 57%～ 7 70 %和 1 0 0 3 %～ 1 2 73 % ;Under the condition of wheat peanut(summer) cropping system, the nitrogenous fertilizer utilization ratio(NFUR) was 32 52% when the total annual nitrogenous fertilizer was applied to both crops by three times (base and top dressing to wheat and base fertilizer to peanut, M 3) and was 37 01% when the total annual nitrogenous fertilizer was applied to wheat by twice(base and top dressing to wheat, M 2). The nitrogen fertilizer recovery ratio was 69 24% in M 3, 12 03% higher than that in M 2. The yields of wheat and peanut in M 3 were 7 7% and 3 4%, respectively, higher than that in M 2, showing that the M 3 was ideal fertilizer application mode under the wheat peanut cropping system. The NFUR was 16 08%～35 63% for wheat and was 23 70% for peanut. The NFUR was 6 57%～7 70% for wheat with the base fertilizer and was 10 03%～12 73% for wheat with top dressing fertilizer (elongation stage). Great effects of fertilizer applying time and rate on the NFUR were observed.

关 键 词：小麦 花生 两熟制 氮肥分配 产量 ^15N示踪 氮肥利用率 氮同位素示踪 

分 类 号：S512.106.2[农业科学—作物学] S565.20