Abstract

The present study was conducted to compare the carbon sequestration potential, carbon emission, and cost benefit ratio of wheat varieties under open farming and poplar based agroforestry system. Field experiment was carried out at Agroforestry Research Center, G.B. Pant University of Agriculture and Technology, Pantnagar, India. The experimental plots were laid out in randomized block design (RBD) with two associate farming systems, open farming and poplar based agroforestry system, and four varieties of wheat, PBW-373, PBW-343, UP-262 and VL-907, with three replications. Above ground, below ground and total biomass, carbon stock, carbon sequestration, carbon credit, and carbon price all were significantly higher in wheat under poplar based agroforestry system (22.949, 2.753, 25.702, 11.460, 42.049 tonnes/ha, 40.049 and $744.270/ha) while net emission was significantly lower (−40.998 tonnes/ha) in two years, as compared to open farming (−37.263 tonnes/ha). Net return and Benefit Cost (B:C) ratio ($876.29/ha and 1.83) was also higher in agroforestry system than open farming system ($700.91/ha and 1.82). Among wheat varieties VL-907 recorded maximum net return and B:C ratio ($914.52/ha and 2.12) followed by PBW-343.

摘要

本研究旨在比较开放耕作和基于杨树的农林业系统下小麦品种的固碳潜力，碳排放量和成本效益比。实地试验在印度潘特纳加尔GB潘特农业技术大学农林业研究中心进行。实验地块采用随机区组设计（RBD）进行布局，其中包括两种联合耕作系统，即开放耕作和基于杨树的农林业系统，以及四种小麦品种，PBW-373，PBW-343，UP-262和VL-907，以及三个重复。在基于杨树的农林业系统下，小麦的地上，地下和总生物量，碳储量，碳固存，碳信用和碳价格均显着较高（22.949、2.753、25.702、11.460、42.049吨/公顷，40.049和744美元。270 /公顷），而与露天养殖（−37.263吨/公顷）相比，两年内的净排放量显着降低（−40.998吨/公顷）。农林业系统的净收益和效益成本（B：C）比率（876.29 /美元/公顷和1.83）也高于开放式耕作系统（700.91美元/公顷和1.82）。在小麦品种中，VL-907的净收益和B：C比率最高（$ 914.52 / ha和2.12），其次是PBW-343。