不同种植模式下棉花品种蒸腾速率和根系分布研究(英文)

Differences of Transpiration and Root Distribution among Cotton Varieties under Different Planting Types

本文重点研究了不同种植模式下不同棉花品种的蒸腾速率、根系生长特性和空间分布规律。结果表明 ,棉花品种本身对蒸腾速率具有比较大的影响 ,同时 ,同一株棉花的叶序叶直接影响到其蒸腾速率。棉花的根系具有比较明显的空间分布 ,在苗期 ,棉花大部分根系分布在 0～ 40 cm土层 ,大部分侧根的分布范围在 0～ 2 0 cm。同时 ,棉花根系特性还受到种植模式的影响 ,地膜覆盖能够促进棉花根系的生长 ,除此以外 ,根系生长特性还与棉花品种有关。在几个供试的棉花品种中 。

This paper focuses on cotton transpiration, root system biomass, growth, development and distribution under growing stage and different plantation mode. The results show that the cotton transpiration are affected by cotton varieties, leaf order etc, and the most of root distributes in 0 40cm layer and the lateral root is among 0~20cm range. At the same time, the cotton root features are affects on plantation mode; the cotton root mulched has the fastest growth rate than other cotton plantation mode's, such as regular plantation mode and mixed onion cotton mode. And cotton root growth also depends on cotton variety. CCRI35 has the greatest growth rate.