论文部分内容阅读
选择双季不同生育期的早、晚稻各8个品种,采用等行和宽窄行2种机插方式,探讨了2种机插方式下双季稻不同品种的产量和主要生理性状表现,旨在为双季稻机插的品种选择和适宜机插方式提供参考。结果表明,宽窄行机插处理较等行机插处理,早晚稻产量各提高2.90%和2.73%;宽窄行机插处理叶面积指数高于行机处理;宽窄行机插处理平均光合势高于等行机插处理,从分蘖盛期到成熟期各生育阶段,早稻分别提高了0.92%、3.99%、5.64%,晚稻分别提高了3.46%、7.09%、6.79%;宽窄行机插处的叶绿素SPAD值、根系活力高于等行机插处理;宽窄行机插处的单穗枝梗和颖花分化数较高、退化率较低。同等机插条件下,早稻品种株两优819和晚稻品种丰源优299有明显的产量优势,此类品种可作为江西等双季稻区机插品种首选。
Eight varieties of early and late rice at different growth stages in two seasons were selected to study the yield and major physiological traits of two varieties of double cropping rice under two types of machine-inserted method, using two kinds of machine-inserted methods such as islet width and width rowing This paper provides reference for the selection of varieties of double-cropping rice planting machine and the appropriate machine insertion method. The results showed that the width and width of the machine were higher than those of the machine, the yield of morning and evening rice increased by 2.90% and 2.73%, the leaf area index of the machine with wide and narrow row was higher than that of the machine with the same width. The average photosynthetic potential In the period from the tillering stage to the maturing stage, the early rice increased by 0.92%, 3.99% and 5.64%, while the late rice increased by 3.46%, 7.09% and 6.79% respectively. The chlorophyll SPAD value and root activity were higher than those of other machines. The single spike branch and spikelet differentiation number of wide and narrow row machine plugged place higher, and the rate of degradation was lower. Under the same machine interpolation conditions, the early rice variety Lian Liangyou 819 and the late rice variety Fengyuanyou 299 have obvious yield advantages. Such varieties can be used as the first choice for the planting varieties of double cropping rice in Jiangxi and other regions.