Plant Growth and Fate of Nitrogen in Mixed Cropping, Intercropping and Crop Rotation : IV. Residual effect of some legumes on nitrogen content of succeeding crops
Plant Growth and Fate of Nitrogen in Mixed Cropping, Intercropping and Crop Rotation : IV. Residual effect of some legumes on nitrogen content of succeeding crops
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混作、间作和轮作中植物生长和氮的去向：IV。
DOI：
10.1626/jcs.55.299
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发表时间：
1986
影响因子：
--
通讯作者：
H. Chujo
中科院分区：
文献类型：
--
作者：
H. Daimon;H. Chujo
研究了一些豆科植物对贫氮土壤盆栽后继禾本科作物氮含量的残留影响。测试的豆类包括豌豆 (Pisum sativum L.)、蚕豆 (Vicia faba L.)、苜蓿 (Medicago sativa L.) 和红三叶草 (Trifolium pratense L.)。继这些豆类之后，又相继种植玉米和小麦。结果总结如下。 1. 顶部氮含量以蚕豆和红三叶草最高，苜蓿中等，豌豆最低。苜蓿和红三叶草地下部分的氮含量高于蚕豆和豌豆（表1）。 2. 后续第一茬作物玉米顶部的氮含量与前一豆科植物地下部分的氮含量不成正比。红三叶草之后的玉米产生最高的氮产量，苜蓿或蚕豆之后的玉米产生的氮产量最高，而豌豆之后的玉米产生的氮产量最低（图1）。 3. 后续第二季玉米和第三季小麦顶部的氮含量低于第一季玉米。这些作物的氮含量随前述豆科植物的种类而变化。苜蓿后的氮含量最高，而红三叶草或豌豆后的氮含量最低（图2和图3）。从这些结果发现，豆类增加了后续玉米和小麦的氮含量，并且这种增加随豆类的种类而变化。有人认为，这种变化不仅是由于收获后豆类残留物的氮含量所致，而且还与残留物的腐烂率有关。
Some legumes were examined on residual effect on nitrogen content of succeeding gramineous crops in pot culture using nitrogen-poor soil. The tested legumes were pea (Pisum sativum L.), broad bean (Vicia faba L.), alfalfa (Medicago sativa L.) and red clover (Trifolium pratense L.). After these legumes, corn and wheat were cultured successively. The results are summarized as follows. 1. Nitrogen content of tops was highest in broad bean and in red clover, medium in alfalfa and lowest in pea. Nitrogen contents of underground parts of alfalfa and red clover were higher than those of broad bean and pea (Table 1). 2. Nitrogen content of tops of the succeeding first crop, corn, was not proportional to the nitrogen contents of underground part of the preceding legumes. The corn following red clover produced the highest nitrogen yield, that following alfalfa or broad bean medium and that following pea the lowest (Fig. 1). 3. Nitrogen contents of tops of the succeeding second crop, corn, and of the third crop, wheat, were lower than that of the first corn. The nitrogen contents of these crops varied with the species of the preceding legumes. The nitrogen content after alfalfa was the highest, whereas that after red clover or pea was the lowest (Figs. 2 and 3). It is found from these results that legumes increase nitrogen contents of succeeding corn and wheat and that this increase varies with the species of the legumes. It is suggested that this variation is due not only to nitrogen content of legume residues after harvest but also to decay rate of the residues.