【作者】 张俊国； 张三元；

【Author】 ZHANG Jun-guo ZHANG San-yuan (Rice Research Institute,Jilin Province Academy of Agricultural Sciences,Jilin Gongzhuling 136100,China)

【机构】 吉林省农业科学院水稻研究所；

【摘要】 采用正交旋转试验方法,对吉梗88号高产栽培技术和产量构成因素对产量的作用进行了相关和通径分析,结果表明:吉粳88号高产稳产,平均产量效应9101.4kg/hm²,产量最高可达11269.1kg/hm²,各栽培因素对吉粳88号产量作用大小的顺序为施氮量>插秧方式>施磷量>插秧苗数>施钾量,其中施氮量对产量起着决定性作用。要使吉粳88号产量达到10000kg/hm²以上,各项栽培措施应采用的数量为:施氮（N）量220.3～228.0kg/hm²;施磷（P₂O₅）量102.0～111.5kg/hm²;施钾（K₂O）量28.5～38.7 kg/hm²;插秧方式30cm×13.6～14.8cm;插秧苗数5.1～5.8个/穴。对吉粳88号产量贡献最大的产量构成因素是单位面积穗数, 与产量的偏相关、通径系数依次为0.544、3.0516;其次为每穗粒数,偏相关和通径系数依次为0.512、1.7611;而空秕率和千粒重的作用很小。因此,要使吉粳88号获得高产,在栽培措施上首先应确保穗数,然后再力争穗大。更多还原

【Abstract】 The correlation and path coefficient of yield and yield component were analyzed,under orthngonal design experiment,according to the re- sults of yield and each combination of yield,Results were as follows:Jijing 88 shows high and stable yield character.Average yield can get 9101. 4 kg/hm²,the highest can get as high as 11 269.1 kg/hm².The effect of every cultivation factor to yield is the amount of N＞trans planting method ＞P＞plants/hill＞K.Among those,amount of N has the biggest effect to yield.In order to make Jijing 88 get a yield of 10000/hm² the best culti- vation method should be as follows:N is 220.3-228.0 kg/hm²,P₂O₅ is 102.0～111.5 kg/hm²,K₂O,28.5～38.7,Planting density is 30× 13.6-14.8 cm,5.1-5.8 seedlings/hill.Panicles have the biggest contribution to the yield of‘Jijing88’the partial correlation and path coefficient with yidd is 0.544 and 3.0516 respectively.The second is gains per panicle,the partial correlation and path coefficient with yield is 0.512 and 1.7611,respectively;Grain weight and empty grain rate has less effect.The highest panicles should be got and then big panicles for high yield of Jijing 88.更多还原