不同密度和肥料对杂交棉主要农艺性状的影响研究

通过不同肥料和密度对杂交棉主要农艺性状的影响研究,结果表明,在22500~31500株/hm2的密度水平和600~1050kg/hm2的施肥(折尿素,下同)水平范围内,各处理对杂交棉的生育期影响不大;而随着密度增加,杂交棉每株果档数减少、单铃重下降、衣分降低,有效铃增加,产量总体上呈增加趋向势;随着肥料水平增加,不同密度水平的产量性状因子表现不一致,,而较低密度时,除每株果档数外其余产量性状及产量均增加,而较高密度时,各产量性状及产量则表现先增后降,但差异不明显,均在杂交棉移栽种植的适宜密度范围内。综合来看,生产上应以27000株/hm2密度和900kg/hm2施肥水平为基础上,视田间具体条件,选择适宜的肥料和移栽密度水平。

Study on the Effect of Different Density and Fertilizer Treatments on Main Characters of hybridize-contton on Transplan Region

The effects of different fertilizers and transplant density treatments on main characters of hybridize-contton,were studied in the exeperiment. The results showed that fruit shelvesboll weightlint percentage were reduced, while its boll numbers per plant and yield tended to increase, along with increase of transplant density, within the range of 22500~31500kg/hm2 of density and 600~1050kg/hm2(convert into carbamide, same as following)of fertilizer treatments; Moreover yield characters of different density-treatments responsed differently, along with the increase of fertilizers level, fruit shelves per plant tended to increase, rest characters and yield were enhanced at lower density level, but tended to increase firstly, then decline slightly, while at comparatively higher density level, however they were all within the suitable range of treatment. Synthesizely, 27000/hm2 of density and 900kg/ hm2 of fertilizer treatment were comparatively suitable level when hybridized-contton plant at transplanted-seedling area of Zhejiang province.