【摘要】 采用植物生长分析法 ,研究了北疆高产( 1 80 0 kg· hm- 2 )棉花干物质积累与分配、叶面积指数、净同化率、相对生长率、群体生长率的动态变化规律 ,分析了北疆公顷产 1 80 0 kg高产棉花物质生产的特点 ,提出了各生育时期有关干物质生产分配的生理指标更多还原

【Abstract】 The plant growth analysis was used to study the accumulating and partitioning process of dry matter in cotton under the condition of three kinds of high yield colony (1800kg·hm -2 ). The changes of Leaf Area Index (LAI),Net Assimilation Rate (NAR), Relative Growth Rate (RGR),Crop Growth Rate (CGR), were investigated. In different stages of growth and development, the changes of growth analytical indicators were as follows: (1)LAI was 0.05～0.09 in the three leaves stage, 0.13～0.22 in the squaring stage, 0.75～1.02 in the full square stage, 1.32～1.80 in th flowering stage, 2.30～2.91 in the full flower stage, 3.72～4.23 in the full boll stage, 2.72～2.85 in the opening boll stage, respectively. (2)NAR was 9.71～11.05g·m -2 ·d -1 in the three leaves stage, 9.94～11.60g·m -2 ·d -1 in the squaring stage, 14.75～16.08g·m -2 ·d -1 in the full square stage, 7.55～8.63g·m -2 ·d -1 in the flowering stage, 5.63～7.25g·m -2 ·d -1 in the full flower stage, 4.45～5.23g·m -2 ·d -1 in the full boll stage, 3.04～4.51g·m -2 ·d -1 in the opening boll stage, respectively. (3)RGR was 0.087～0.111g·m -2 ·d -1 in the three leaves stage, 0.084～0.096g·m -2 ·d -1 in the squaring stage, 0.120～0.135g·m -2 ·d -1 in the full square stage, 0.054～0.069g·m -2 ·d -1 in the flowering stage, 0.039～ 0.045 g·m -2 ·d -1 in the full flower stage, 0.021～0.027g·m -2 ·d -1 in the full boll stage, 0.005 ～0.007g·m -2 ·d -1 in the opening boll stage, respectively. (4)CGR was 0.75～0.91g·m -2 ·d -1 in the three leave stage, 1.62～ 1.70 g·m -2 ·d -1 in the squaring stage, 8.04～12.21g·m -2 ·d -1 in the full square stage, 9.05 ～ 11.04 g·m -2 ·d -1 in the flowering stage, 14.52 ～16.23g·m -2 ·d -1 in the full flower stage, 22.41 ～25.92g·m -2 ·d -1 in the full boll stage, 6.40 ～8.80g·m -2 ·d -1 in the opening boll stage, respectively.更多还原