金优463在赣中北作双季早稻的产量、产量构成因素分析与生产对策

Analysis on the Yield and Yield Components of Jinyou 463 Cultivated in the Central and Northern Regions of Jiangxi Province as Double-season Early Rice and Its Cultural Practice

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.