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Impact of soil amendments on organic carbon pools under a rice-wheat cropping system

机译：稻米种植系统下土壤修正对有机碳库的影响

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Rice-wheat cropping is the dominant cropping sequence in the Indo-Gangetic plains (IGP) of India. An experiment was conducted to study the impact of continuous application of farmyard manure (FYM) and rice straw (RS), either alone or in conjunction with fertilizer nitrogen (N), under a rice-wheat cropping system on i) total soil organic carbon (SOC) and slow pool C, and ii) stabilization of cumulative input C. Application of FYM, after seven years of rice-wheat cropping cycles, increased total SOC and slow pool C at 0-0.15 m soil depth by 6.7 t/ha and 1.5 t/ha, respectively, with the highest effect when FYM, RS and fertilizer N were applied together. Incorporation of RS increased total SOC by 4.1 t/ha, with an insignificant effect on the slow pool C. There was no significant effect of fertilizer N application on total SOC and slow pool C. The slow pool C was strongly correlated with the total SOC. About 18.5% and 4.2% of the cumulative input C were stabilized as total SOC and slow pool C, respectively, due to application of FYM; values for RS were 17.9% and 3.3%, respectively.
机译：米饭种植是印度的印度印度突发性平原（IGP）中的主要种植序列。进行了一个实验，研究了粉质粪肥（FYM）和稻草（RS），单独或与肥料氮（n）结合的牛仔植物（n），在I）总土壤有机碳下的影响（SOC）和缓慢池C，II）累积输入C.累积输入C.在七年的稻米种植循环后，在0-0.15米的土壤深度下增加了七年的稻米种植循环，减少了6.7吨/公顷和1.5 T / HA分别，当FYM，RS和肥料N一起应用时，效果最高。掺入RS增加的总SOC 4.1 T / HA，对缓慢池C具有微不足道的效果。肥料N在总SOC和慢池C中没有显着影响。慢池C与总SOC强烈相关。由于FYM的应用，分别为总SOC和慢池C.18.5％和4.2％的累积输入C稳定为总SOC和慢池C; Rs的价值分别为17.9％和3.3％。

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