甘薯品种宁薯192的高产生理及栽培技术研究

Studies on High Yield Physiology and Cultivation Technology of Sweetpotato Variety Ningshu 192

以食用型甘薯新品种宁薯192为研究对象,以生产上大面积应用的食用型甘薯品种苏薯8号为对照品种,在南京的土壤条件下对宁薯192的高产生理与栽培技术进行了研究。结果表明,其高产生理特性为栽后发根还苗快,茎叶生长势旺,叶面积指数高。干物质积累在整个生育期中均高于对照品种苏薯8号;高产栽培技术研究表明,肥料处理间的生物产量差异极显著,生物产量随施肥量的增加而提高;不同栽插密度对总薯块数、商品薯块数、单薯块重有显著的影响,总薯块数及商品薯块数随栽插密度的提高而增加。肥料和密度对各性状均没有互作效应。

Ningshu 192, a new table use sweetpotato variety was studied in this research. Sushu No. 8 being cultivated in the sweetpotato production at present was used as the control. The high yield physiology and cultivation technology of Ningshu 192 were studied under the soil conditions in Nanjing. The results demonstrated that the high yield physiologic characters of Ningshu 192 were rapid growth, high leaf area index after planting. The dry matter accumulation of Ningshu 192 was faster than that of Sushu No. 8 during the growth period. The study on cultivation technology indicated that fertilizer had a significant effect on the biological yield. But no significant effect was found on other characters. The yield of biology could be enhanced by increasing the amount of fertilizer applied. There were significant differences among effects of the plant density on total root number, marketable root number, weight of single root. The higher plant density was, the larger numbers of total roots and marketable roots were. There was not any interaction between fertilizer and plant density and the characters of Ningshu 192.