论文部分内容阅读
[目的]为超级稻机械插秧农艺方案配套提供了理论支撑。[方法]采用复式裂区(再裂区)试验设计,研究3个因子(施氮量、移栽密度和每穴苗数)对不同类型超级稻品种吉粳88和吉粳102产量的影响。[结果]对于耐肥型超级稻吉粳88,高产栽培要求较高的施肥、密度和每穴苗数。而对于广适型超级稻吉粳102,高产栽培的技术措施要求适宜的密度、每穴苗数和较少的施肥量。不同肥力条件下不同超级稻品种适宜的每穴苗数不同,低肥力和低密度下,增加每穴苗数可以通过增加每穴有效穗数而提高产量,但在较高的肥力和密度下,如果每穴苗数过高,可能因为群体质量恶化而降低产量。
[Objective] The research provided the theoretical support for the matching of agronomic programs of super rice mechanical transplanting. [Method] The effects of three factors (amount of nitrogen application, transplanting density and number of holes per hole) on the yield of different varieties of super rice JiJing 88 and JiJing 102 were studied by the double split zone (rebreak zone) experimental design. [Result] For the high-yielding resistant super rice JiJing 88, high-yielding cultivation required higher fertilization, density and per hole seedling number. However, for the widely adapted super rice JiJia 102, the technical measures of high yielding cultivation demanded suitable density, number of seedlings per hole and less amount of fertilizer. Under different fertility conditions, the suitable number of seedlings per hole was different for different super rice varieties. Under low fertility and low density, increasing seedling number per hole could increase the yield by increasing the effective panicles per hole, but at higher fertility and density, If the number of holes per hole is too high, the yield may be reduced because of the deteriorating mass of the population.