北方广适型超级稻品种吉粳102高产栽培技术研究

目的]为吉粳102的大面积推广提供科学依据。方法]采用五因素二次回归正交旋转组合设计,研究5个因子(施氮量、施磷量、施钾量、播种密度和每穴苗数)及每个因子的5个水平对吉粳102产量的影响。结果]各因素对吉粳102的作用表现为:施氮量>施磷量>密度>每穴苗数>施钾量。5个栽培因素与产量均呈明显的抛物线关系。施氮量对产量的效应最为明显。施氮量与每穴苗数呈负的交互作用。模拟结果表明,吉粳102的最高产量10 896 kg/hm2。当吉粳102产量达到10 500 kg/hm2时,要求施氮量为132~167 kg/hm2,施磷量为87~113 kg/hm2,施钾量为51~98 kg/hm2,移栽密度为30 cm×(13.9~19.4)cm,每穴苗数为2~4棵。结论]建立了吉粳102的高产栽培技术体系。

Study on High-yielding Cultivation Techniques for Super Rice Jijing 102 with Wide Adaptability in North China

Objective] The study aimed to provide the scientific basis for extension of Jijing 102 in large scale.Method] The five factors quadratic regression orthogonal rotational combination design was taken to study the effects of 5 factors(N rate,P rate,K rate,sowing density and seedling number per hole) and 5 levels of each factor on the yield of Jijing 102.Result] The effects of each factor on Jijing 102 showed as N rate > P rate > sowing density >seedling number per hole> K rate.The relationship between 5 cultivation factors and yield all showed a parabola type.The effect of N rate on yield was the most obvious.The N rate and seedling number per hole had a negative interaction.The simulated result showed that the highest yield of Jijing 102 was 10 896 kg/hm2.If the yield of Jijing 102 reached 10 500 kg/hm2,the N rate of 132-167 kg/hm2,P rate of 87-113 kg/hm2,K rate of 51-98 kg/hm2,sowing density of 30 cm×(13.9-19.4) cm and seedling number per hole of 2-4 plants were required.Conclusion] The technical system of high yielding cultivation for Jijing 102 was established.