Here, the arrangement of litterfall and nutrient return to the soil by the seven-year-old plantations of Eucalyptus under different spacings established on sodic wastelands in northern India was determined. The litterfall was sorted into leaf wood and miscellaneous. Further, the seasonal variation of litterfall obtained under three different spacings was recorded. Maximum leaf litter production was observed in 3×3 m spacing followed by 6×1.5 m during the winter season. Whereas, the minimum leaf litter was recorded in 17×1×1 m spacing. Similarly, the maximum wood litter production was observed at the spacing of 3×3 m spacing in rainy season followed by 6×1.5 m.The weights of nutrients returned through annual litterfall in 3×3 spacing returned the highest amount of N (2.16 g/m2 year) followed by 6×1.5 and 17×1×1 spacing.. Whereas, two-year data of litterfall of E. tereticornis showed the 17×1×1 spacing returned the highest amount of P in next year through leaf litter followed by 6×1.5 and minimum 3×3 spacing. Overall, this study provides important information regarding the litterfall guided soil nutrient return to the soil under North Indian conditions.

中文翻译：

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基于桉树的农林业系统的凋落物引导土壤养分返回

在这里，确定了印度北部苏打荒地上不同间隔下桉树7年生人工林的凋落物和养分返回土壤的安排。凋落物被分类为叶木和其他杂物。此外，记录了在三个不同间距下获得的凋落物的季节变化。在冬季，以3×3 m的间距观察到最大的凋落物产量，然后是6×1.5 m。而最小的凋落物记录为17×1×1 m的间距。同样，在雨季，在3×3 m的间隔处观察到最大的木材凋落物产量，随后是6×1.5 m。在3×3的间隔中，每年凋落物返回的养分重量返回了最高的N（2.16 g / m2年），然后是6×1.5和17×1×1间距。两年的E. tereticornis凋落物数据显示，17×1×1间距通过叶片凋落物在明年返回了最高的P量，其次是6×1.5，最小是3×3间距。总的来说，这项研究提供了有关凋落物指导的土壤养分在北印度条件下返回土壤的重要信息。