南疆高产栽培技术下陆地棉器官水平的干物质生产规律

Study on the Rule of Upland Cotton Dry Matter Production under the High- yielding Cultivation Techniques in South Xinjiang

南疆棉区高产栽培技术模式下的陆地棉的干物质积累呈”S”型曲线增长 ;高产棉花总积累的干物质为 1 1 8.7克 /株 ;干物质增长最快的时期在 2 /8～ 1 2 /8(出苗后 85～ 95天 )。地上部干物质分配中心随生育进程发生着如下动态转移 :真叶→茎枝→蕾花→幼铃→铃壳→籽棉。棉铃内部的干物质分配。

The accumulative growth curve of the upland cotton can be described with the 'S' type under the High-yielding cultivation techniques in South Xinjiang 。 The high-yielding cotton accumulates 118.7g dry matter per plant 。From 2 August to 12 August ( days of sprouting 85-95) the rate of dry matter accumulation is the fastest 。During the cotton growing season , the dry matter distribution has transferred as following: true leaf→stem→bud and flower→young boll→boll shell →seed cotton 。The results also indicated that the dry matter distribution and transfer in cotton boll change regularly with the plant time and the cotton node。