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首页> 外文期刊>Plant and Soil >Soil pH changes after application of plant shoot materials of faba bean and wheat.
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Soil pH changes after application of plant shoot materials of faba bean and wheat.

机译：施用蚕豆和小麦的芽苗后土壤pH发生变化。

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摘要

The effect of green material of faba bean (Vicia faba) and wheat on soil pH was compared in a soil incubation experiment. In comparison with the control, the application of both plant materials caused a significant soil pH increase. The liming effect was higher for faba bean than for wheat. This difference in liming effect between the two plant species was closely related to their alkalinity concentration. In total, 82% of the alkalinity in faba bean and 96% of that in wheat were water-soluble. Toelucidate possible factors responsible for the difference in liming effect, plant matter of wheat and faba bean was fractionated and organic anions were identified. The total concentration of identified organic anions was comparable for both plant species. For wheat, over 80% of the alkalinity occurred in the form of simple organic anions with malate as the dominant one. In faba bean, only 40% of the alkalinity was identified as simple organic anions. Approximately 40% of the alkalinity was related to macromolecules, possibly pectinates. The data suggest that macromolecules such as pectinates may be mainly responsible for the greater liming effect of faba bean, as compared to wheat.
机译：在土壤培养实验中比较了蚕豆和小麦的绿色材料对土壤pH值的影响。与对照相比，两种植物材料的施用均导致土壤pH值显着增加。蚕豆的生石灰效果比小麦高。两种植物物种之间的石灰效应差异与它们的碱度浓度密切相关。蚕豆中碱的总含量为82％，小麦中碱的总含量为96％。为了阐明造成石灰效果差异的可能因素，对小麦和蚕豆的植物物质进行了分馏，并鉴定了有机阴离子。两种植物的已鉴定有机阴离子的总浓度相当。对于小麦，超过80％的碱度以简单的有机阴离子形式出现，其中苹果酸为主要阴离子。在蚕豆中，只有40％的碱度被确定为简单的有机阴离子。大约40％的碱度与大分子有关，可能与果胶有关。数据表明，与小麦相比，大分子如果胶可能是导致蚕豆产生更大石灰的主要原因。

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