论文部分内容阅读
豫南稻区1984年基本完成了建国以来的第五次水稻品种更换.该项研究为这次大的更换提供了理论依据.对布局试验的五个品种进行了高产、稳产及适应性估测:红南、广二矮104,桂朝二号三个品种,作春稻和麦茬稻比对照品种南京11号增产3.5——22.65%.产量差异达显著和极显著水平.朝桂二号、红南、南京11号三个品种的回归系数(b)<1,表明稳产性好.广二矮104,84矮63两品种b>1,稳产性较差,但栽培条件严格增产力大,它们之间b的差异均未达显著水平.而它们的决定系数(r~2)均<1,说明适应性好.而广二矮104和84矮63两个品种的r~2大于其它三个品种.因此上述三个品种完全可在予南稻区应用推广.
The southern region of rice in Henan Province basically completed the fifth rice variety change since its founding in 1984. The study provided the theoretical basis for this major replacement.The yield, yield stability and fitness of the five varieties tested in the layout were estimated : Red south, wide two short 104, Gui Cha II three varieties for spring rice and wheat stubble than the control variety Nanjing 11 yield 3.5--22.65% yield differences were significant and extremely significant level.Zui Gui II, The regression coefficient (b) of three varieties of Hongnan and Nanjing 11 was <1, which showed that the yield was good.Guang Er short 104,84 short 63 two varieties b> 1, the stability of the poor, but the cultivation conditions strictly increase productivity, The difference between them was not significant, and their coefficient of determination (r ~ 2) were less than 1, indicating that the adaptability is good, while the r ~ 2 of Guang Er short 104 and 84 short 63 are greater than the other three Therefore, the above three varieties can be completely popularized and applied to the South rice area.