不同栽培方式对甬优2640产量和物质生产的影响

Effects of Cultivation Methods on Yield and Matter Production of Yongyou2640

为明确甬优2640在钵苗机栽、旱育手栽和毯苗机插3种栽培条件下产量及其结构、物质积累和生产特征,以大穗、特早熟籼粳品种甬优2640为材料,对钵苗机栽、旱育手栽和毯苗机插3种栽培方式水稻的产量、干物质积累、茎蘖动态等进行比较研究。结果表明:3种不同栽培方式甬优2640产量存在显著差异,钵苗机栽显著高于人工手栽、毯苗机插,产量差异主要来源于每穗粒数;物质生产上,移栽至N-n叶龄期钵苗机栽和旱育手栽物质积累量多于毯苗机插,无效分蘖期毯苗机插物质积累量较多,至拔节期不同栽培方式干物质量相当,拔节至抽穗期、抽穗至成熟期钵苗机栽>旱育手栽>毯苗机插,3者间存在显著差异;江苏淮北地区钵苗机栽是甬优2640获得高产的最佳栽培方式。

In order to explore yield and component factor, matter accumulation and growth characteristics of nutrition bowl me- chanical transplanting, artificial transplanting and blanket--like seedling mechanical transplanting of Yongyou2640, the large spike, early indica and japonica varieties Yongyou 2640 as experimental materials as well as three cultivation methods including nutrition bowl mechanical--transplanting, artificial transplanting, blanket--like seedlings mechanical transplanting, were used to comparatively study the effect of different cultivation methods on the yield, dry matter accumulation, dynamics of stems and tillers. The results showed that, there are significant differences of yield of Yongyou2640 under 3 different cultivation meth- ods, nutrition bowl mechanical--transplanting was significantly higher than that of artificial planting and blanket--like seed- lings mechanical transplanting, the yield difference comes mainly from the grain number per panicle. In material production, transplanting stage to N--n stage seedlings nutrition bowl mechanical--transplanting and artificial transplanting in material ac- cumulation are more than blanket-- like seedlings mechanical transplanting, but in the stage invalid tillering, blanket -- like seedlings mechanical transplanting is more, still jointing stage the three cultivation methods are almost the same in material ac- cumulation. From jointing to the heading stage, heading to the maturity stage performance for the nutrition bowl mechanical-- transplanting 〉artificial transplanting〉blanket--like seedlings mechanical transplanting, there was significant difference be- tween these three different cultivation methods. Its indicated that nutrition bowl mechanical--transplanting is the best cultiva- tion for Yongyou 2640 in Huaibei of Jiangsu province.