长期少免耕与氮肥减量对全膜双垄沟播玉米产量及碳排放的调控作用

周永杰,谢军红,李玲玲,王林林,罗珠珠,王进斌

Effects of Long-Term Reduce/Zero Tillage and Nitrogen Fertilizer Reducing on Maize Yield and Soil Carbon Emission Under Fully Plastic Mulched Ridge-Furrow Planting System

ZHOU YongJie,XIE JunHong,LI LingLing,WANG LinLin,LUO ZhuZhu,WANG JinBin

表2 耕作方式及施氮水平对玉米生长率和净同化率的影响

Table 2 Effects of different tillage practices and nitrogen levels on growth rate ( g·plant-1·d-1) and net assimilation rate ( g·m-2·d-1)

处理 Treatment 出苗期—拔节期 Sowing to jointing stage 拔节期—开花期 Jointing to flowering stage 开花期—灌浆期 Flowering to filling stage 灌浆期—成熟期 Filling to maturity CGR CGR NAR CGR NAR CGR NAR T1 0.76a 4.45a 7.78a 4.28a 5.34a 3.18a 4.85a T2 0.71a 4.41a 8.48a 4.11a 5.85a 3.13a 5.19a T3 0.77a 4.23a 7.59a 4.39a 5.87a 3.4a 5.48a T4 0.70a 4.58a 8.37a 5.05a 6.69a 3.63a 5.52a N1 0.73a 4.15a 7.50b 5.11a 6.70a 3.20a 5.08a N2 0.74a 4.68a 8.61a 3.81b 5.17b 3.47a 5.45a T1N1 0.73ab 4.45ab 7.35b 4.97a 5.94a 2.92a 4.54a T1N2 0.79ab 4.44ab 8.20ab 3.60a 4.74a 3.43a 5.16a T2N1 0.75ab 3.91b 7.43b 4.95a 7.01a 2.89a 4.71a T2N2 0.66b 4.91a 9.53a 3.28a 4.68a 3.37a 5.67a T3N1 0.74ab 3.92b 7.24b 5.19a 6.85a 3.59a 5.64a T3N2 0.81a 4.53ab 7.94ab 3.60a 4.90a 3.22a 5.33a T4N1 0.70ab 4.32ab 7.97ab 5.36a 7.01a 3.40a 5.43a T4N2 0.70ab 4.84a 8.77ab 4.74a 6.36a 3.86a 5.62a T ns ns ns ns ns ns ns N ns * * * * ns ns N×T * * * ns ns ns ns