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试验于1996～1998 年在扬州大学农学院内进行,供试棉花品种为苏棉8 号。春夏播棉芦管与营养钵育苗移栽对比试验结果指出,芦管育苗移栽棉在现蕾时,其单株干重与对照无显著差异。但是,在幼苗期阶段,单株干重显著低于对照;并对根、茎、叶物质积累和分配均产生不利影响,这种物质生产弱势是由芦管环境对棉苗早期限根控叶而使同化产物减少所致;在大苗期阶段,芦管棉苗植株干物质积累逐渐加速; 并随着叶面积增大,光合产物增多,营养中心下移,根/冠干重比明显超过对照,出现了下层根旺发优势,形成了强根壮株的良好长势。因此,提高播种质量,改善芦管苗早期的根际营养环境和扩大叶面积,增强物质生产能力,并充分利用大苗期发根优势,将是芦管育苗移栽棉壮苗早发的关键。
The experiment was conducted in the College of Agriculture of Yangzhou University from 1996 to 1998. The test cotton variety was Sumian No.8. Comparison of spring and summer broadcast cotton reed tube and nutrition bowl seedling transplanting comparative test results showed that the reed tube nursery transplant cotton in the bud, the dry weight per plant and the control no significant difference. However, in the seedling stage, the dry weight per plant was significantly lower than that of the control, and adversely affected the accumulation and distribution of the roots, stems and leaves. The weakness of this material production was controlled by the reed pipe environment Which led to the decrease of assimilation products. During the seedling stage, the dry matter accumulation of cotton seedlings of Phragmites australis gradually accelerated. With the increase of leaf area, the photosynthetic products increased, the nutrition center moved down and the ratio of root / , There has been the advantages of the lower root Wang hair, forming a strong strong roots grow well. Therefore, improving sowing quality, improving rhizosphere nutrition environment, expanding leaf area and enhancing material production capacity of early reed rhizomes and making full use of the advantages of hair root in large seedling stage will be the key to the early onset of transplanting cotton seedlings.