ass日本风韵熟妇pics男人扒开女人屁屁桶到爽|扒开胸露出奶头亲吻视频|邻居少妇的诱惑|人人妻在线播放|日日摸夜夜摸狠狠摸婷婷|制服 丝袜 人妻|激情熟妇中文字幕|看黄色欧美特一级|日本av人妻系列|高潮对白av,丰满岳妇乱熟妇之荡,日本丰满熟妇乱又伦,日韩欧美一区二区三区在线

The nutrient uptake, photosynthesis and yield of different separation methods were measured to analyze resource competition from above-and below-ground interaction. The treatments included no shoot or root separation (T1), shoot and root separation (T2), root separation (T3), shoot separation (T4), sole maize (T5) and soybean (T6). The land equivalent ratios of grain yield and biomass were 1.23 and 1.20 for T1, 0.97 and 0.91 for T2, 1.01 and 1.02 for T3, 1.10 and 1.08 for T4, respectively. Competiveness of maize relative to soybean was 0.79 for T1, -0.08 for T2, 0.14 for T3 and 0.39 for T4, respectively. The nutrient competitive ratios of maize relative to soybean were 1.63, 1.92 and 1.50 for T1; 1.05, 1.03 and 1.06 for T2; 1.28, 1.32 and 1.27 for T3; 1.47, 1.43 and 1.36 for T4, respectively. Except the jointing stage, the Pn, Tr, Gs and Ci of maize were the highest for T1; and the values for T4 were the second; and the values for T2 and T3 were remarkable lower than that for T1. Except the branching stage, the parameters of soybean were the lowest for T1, and the values for T2 and T3 were significantly higher than that for T1. In summary, as for maize/soybean intercropping advantages, the interactions of above- and below-ground parts was greater than that under the action of a single factor, and there was greater role from below-ground part than above-ground part.