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为探究生物炭对农田土壤有机碳储量以及作物固碳量的作用效应，在长江中下游地区地带性土壤黄棕壤上设置田间小区试验，采用玉米-小麦轮作方式，在不同生物炭用量〔0.0kg/(m2·a)-(CK)、0.5 kg/(m2·a)-(BC1)、4.5 kg/(m2·a)-(BC2)〕条件下，对土壤有机碳含量、作物生物量、作物光合固碳量等指标进行了测定分析，并估算了试验条件下农田土壤-植物系统有机碳储量。结果表明：（1）在0~20cm土层，BC2处理两季玉米收获时的土壤有机碳储量（3.72和3.77 kg/m2）分别比CK处理增加18.93%和19.23%。小麦季BC2的土壤有机碳储量达3.43 kg/m2，也比CK增加了12.83%。BC1处理比CK虽有增加，但未形成显著差异。土壤有机碳含量是土壤有机碳储量增加的基础。（2）两季玉米收获时其BC1处理的单株固碳量未显著高于对照，BC2处理的玉米单株固碳量（80.06和80.69g·株-1）则分别比对照提高6.46%和7.16%。在小麦季，2个生物炭处理的植株单株固碳量均高于对照，尤以BC2处理较为突出，其单株固碳量达到3.06 g·株-1，比对照显著提高16.17%。作物生物量对植株单株固碳量有显著贡献。（3）就土壤-植物系统有机碳储量而言，BC2处理下，在2季玉米收获时该值分别为4.42和4.50kg/m2，显著高于CK处理，增幅达16.75%和17.09%。小麦季BC2处理的土壤-植物系统有机碳储量也达到了3.70kg/m2，比CK显著提高13.07%。在三季作物中，土壤有机碳储量占整个土壤-植物系统有机碳储量的80%~93%，土壤是农田生态系统碳增汇的主要来源，减少土壤碳排放可以使整个农田生态系统固定更多的碳。
In order to explore the effect of biochar on the soil organic carbon storage and the carbon sequestration of crops in the field, a field plot experiment was set up on the yellow soil of zonal soil in the middle and lower reaches of the Yangtze River. Using corn-wheat rotation mode, kg / (m2 · a) - (CK), 0.5 kg / (m2 · a) - (BC1) and 4.5 kg / (m2 · a) - (BC2) , Photosynthesis of photosynthesis and other indicators of crop photosynthesis were measured and analyzed, and estimated under experimental conditions soil-plant system of organic carbon storage. The results showed that: (1) Soil organic carbon storage (3.72 and 3.77 kg / m2) increased by 18.93% and 19.23% respectively when compared with CK treatment at two harvest seasons. Soil organic carbon storage in wheat BC2 reached 3.43 kg / m2, also increased by 12.83% compared with CK. BC1 treatment than CK although there is an increase, but did not form a significant difference. Soil organic carbon content is the basis for the increase of soil organic carbon storage. (2) The carbon sequestration of BC1 in the two seasons of maize harvesting was not significantly higher than that of the control, and the carbon sequestration (80.06 and 80.69g · plant-1) of BC2-treated maize increased 6.46% and 7.16%. During the wheat season, the carbon sequestration of two plants treated with biochar was higher than that of the control, especially BC2. The carbon fixation per plant reached 3.06 g · plant -1, which was 16.17% higher than that of the control. Crop biomass contributes significantly to plant carbon sequestration. (3) For soil-plant system organic carbon storage, under BC2 treatment, the values were 4.42 and 4.50 kg / m2 at harvest of 2 maize, respectively, which were significantly higher than those of CK (16.75% and 17.09%). The soil-plant system organic carbon storage in the BC2 season also reached 3.70kg / m2, a significant increase of 13.07% over CK. In the three-season crops, soil organic carbon storage accounts for 80% -93% of the total soil-plant organic carbon storage. Soil is the main source of carbon sinks in farmland ecosystems. Reducing soil carbon emissions can make the entire farmland ecosystem more stable Of carbon.