Growth of Crotalaria juncea and Sesbania cannabina Under Different Underground Water Levels and Their Nitrogen Contribution to the Succeeding Spinach Plant
Growth of Crotalaria juncea and Sesbania cannabina Under Different Underground Water Levels and Their Nitrogen Contribution to the Succeeding Spinach Plant
复制标题
不同地下水位下猪屎豆和田菁的生长及其对菠菜后继植株的氮素贡献
DOI：
10.1626/jcs.67.467
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发表时间：
1998
影响因子：
--
通讯作者：
H. Daimon
中科院分区：
文献类型：
--
作者：
H. Ohdan;H. Daimon
在200 L容积容器中进行的实验评估了在不同地下水位（地下16cm[高]和32cm[低]）下生长的猪屎豆和田菁的干物质生产和氮吸收，并研究了掺入对后续菠菜氮贡献的影响。两种植物在低水平掺入时顶部的干重和氮含量均高于高水平掺入时的干重和氮含量。在高水平下，两种植物的干重和氮含量的减少没有显着差异，范围为 30% 至 35%。尽管两种植物在水位之间的干物质产量不同，但高水位下的后续菠菜植株的产量和氮含量均优于低水位下的产量和氮含量。来自土壤和掺入物质的氮占总氮含量的比例高于来自肥料的氮，为86%~92%。在盆栽实验中进一步研究了掺入大量芥菜顶部后对菠菜植物生长的抑制作用。 300g一体盆的鲜重明显低于100g和200g一体盆的鲜重。研究结果对芥菜从稻田引入旱地的可能性进行了讨论。
Dry matter production and nitrogen absorption of Crotalaria juncea and Sesbania cannabina grown under different underground water levels(16cm[high]and 32cm[low]below the ground)were evaluated in experiments conducted with 200 L volume containers, and the effect of incorporation on the nitrogen contribution to the succeeding spinach was also investigated. The dry weight and nitrogen content of tops at time of incorporation under low level were higher than those under high level in both plant species. No significant difference was noted in the decrement of dry weight and nitrogen content under high level between the two plant species, which was found to range from 30 to 35%. The yield and nitrogen content of the succeeding spinach plant under the high level were superior to those under the low level, regardless of the different dry matter production between water levels in both plant species. The proportion of nitrogen derived from soil and incorporated material to the total nitrogen content was higher than that derived from fertilizer, ranging from 86 to 92%. The inhibition against growth of the spinach plant after the incorporation of a greater amount of C.juncea tops was further investigated in a pot experiment. The fresh weight in a 300g incorporated pot was significantly lower than those in 100g and 200g incorporated pots. The results were discussed in the possibility of introducing C.juncea to the upland fields from paddies.