中早熟水稻优良新品系吉89—45高产稳产规范化栽培技术初探Ⅰ.主要农艺措施与产量的函数模型分析

STUDIES ON CULTIVATION TECHNOLOGY FOR A NEW RICE CULTIVAR JI89-45. Ⅰ. ANALYSIS OF FUNCTIONAL MODEL FOR MAIN CULTVATION MEASURES AND YIELD

摘要:

采用正交回归旋转组合设计, 对吉89-45新品系栽培上四个主要可控因素进行了研究, 结果表明: (1)吉89-45新品种确实早熟、高产, 其平均产量效应为每公顷8640.25公斤, 若栽培技术得当, 公顷产量最高可达11183.9公斤。(2)主要栽培因素对吉89-45产量影响大小的顺序是: 施氮量>插秧苗数>穗肥所占比例>插秧方式, 尤其是施氮量, 对吉89-45的产量起决定性作用。(3)预测吉89-415公顷产量在9000公斤以上时, 主要栽培因素, 应采用的数量为, 施氮量每公顷215.6~230.6公斤; 穗肥比例22.9%~26.0%; 插秧方式30×15.9cm~30×17.2cm。每穴插秧苗数4.7~5.5个。

Abstract:

Adopting the orthogonal gyrating-regression disign, 4 main elements for cultivation of the new line Ji89-45 wered studied. The result showed: (1)the new line Ji89-45 was earlymaturing, high yield, the arerage yield was 8640.25kg/ha, and the highest yied was i1183.9kg/ha. (2) The effect of the main Cultural elements on Ji89-45 was in the order: The amount of applied fertilizer (N) was the most importallt element affecting on the yield, follewed by transplanted sgedlings, proportion of booting fettilizer, way of transplanting seedlings. (3) It is calculated that:when the yield of Ji89-45 is 9000kg/ha per hectare, main clements for cultivation should be the followings: the, amount of appled fertilizer (N), 215.6-230.6kg, per hectare; the proportion of bogting fertilizer: 22.9-26.0%; the way of transplanting seedlings: 30×15.9cm~30×17.2cm, and with 4.7~5.5seedlings Per hill.