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作 者:陈小荣[1] 石庆华[1] 潘晓华[1] 贺浩华[1] 张美良[1] 吴德龙[1] 朱昌兰[1] 胡水秀[1] 李木英[1] 曾勇军[1]
机构地区:[1]江西农业大学农学院江西省作物生理生态与遗传育种重点实验室,江西南昌330045
出 处:《江西农业大学学报》2006年第2期161-163,共3页Acta Agriculturae Universitatis Jiangxiensis
基 金:国家科技部"国家粮食丰产科技工程"(2004BA520A40)
摘 要:对金优463在赣中北作双季早稻的产量及其构成因素的相关和通径分析表明,穗数/hm2对产量的直接作用和净作用最大,每穗粒数紧次之。当穗数少于36×105/hm2和产量在7 200 kg/hm2以下时,增穗是增产的关键;当穗数多于39×105/hm2和产量在7 500 kg/hm2以上时,关键是提高粒数/穗。还提出了金优463高产的穗粒结构及其栽培策略。The correlated responses of yield and yield components from the correlative and path coefficient analysis of Jinyou 463 cultivated in the central and northern regions of Jiangxi Province as double - season early rice showed that the direct and net effects of the number of the panicles per hectare on the yield were the maximum, while those of the number of grains per panicle closely took the second panicles in the field were below 36 ×10^5 and yield per hectare under 7 200 kg, the panicles should be considered as the key factor for promoting the yield. However, and yield per hectare were higher than 39 × 10^5 and 7 500 kg respectively, efforts place. When the increment of total when the effective should be made to effective effective panicles increase grains per panicle. In addition, the reasonable yield components for high yield and the corresponding cultural practice were suggested in this paper.
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