种植密度和施肥量对油菜毯状苗生长的影响

张含笑,林参,左青松,杨光,冯倩南,冯云艳,冷锁虎

Effects of plant density and N fertilizer spraying concentration on growth of rapeseed blanket seedlings

Han-Xiao ZHANG,Shen LIN,Qing-Song ZUO,Guang YANG,Qian-Nan FENG,Yun-Yan FENG,Suo-Hu LENG

表5 不同密度和施肥对油菜毯状苗各苗龄根冠比和充实度的影响

Table 5 Effect of planting density and N rate on ratio of shoot to root and seedling fullness of blanket rapeseed seedings during process of growth

密度 Density (Seed plate-1) 施肥浓度 Nitrogen (g L-1) 根冠比Ratio of shoot to root 充实度Seedling fullness (mg cm-1) 20 d 30 d 40 d 20 d 30 d 40 d 400 1 0.061 d 0.088 e 0.111 c 0.555 c 0.750 d 0.877 d 2 0.069 ab 0.101 ab 0.111 c 0.613 ab 0.803 ab 0.962 ab 3 0.070 a 0.107 a 0.135 a 0.649 a 0.830 a 0.983 a 600 1 0.058 e 0.085 ef 0.103 d 0.503 f 0.744 de 0.864 d 2 0.063 c 0.096 c 0.111 c 0.546 d 0.779 bc 0.921 c 3 0.066 b 0.102 b 0.126 b 0.575 b 0.805 ab 0.955 b 800 1 0.055 f 0.080 f 0.102 d 0.488 fg 0.722 e 0.780 f 2 0.058 e 0.087 e 0.109 c 0.524 e 0.745 d 0.817 ef 3 0.063 c 0.091 d 0.124 b 0.527 e 0.768 c 0.865 d 1000 1 0.047 i 0.075 hi 0.101 f 0.406 j 0.666 h 0.745 h 2 0.048 hi 0.080 f 0.105 e 0.415 i 0.681 g 0.744 h 3 0.053 g 0.085 ef 0.109 c 0.431 h 0.686 f 0.766 g 1200 1 0.049 hi 0.065 j 0.095 f 0.383 k 0.641 i 0.721 i 2 0.047 i 0.070 i 0.097 e 0.383 k 0.653 ij 0.716 ij 3 0.053 g 0.078 gh 0.101 d 0.391 j 0.623 j 0.721 i