绵农6号小麦分蘖成穗特性研究

Study of the Tiller Characters of Wheat Variety of Miannong 6

经过品种×密度2因素3水平田间试验,对绵农6号等3个小麦品种分蘖成穗特性进行了初步观察.结果表明,绵农6号单株分蘖数为2.08～4.76个,分蘖成穗率为54.3%～59.3%,均低于对照品种绵阳20号.与对照单株分蘖力的差异主要表现在有效分蘖期(12月20日前).绵农6号主茎与分蘖穗重差异较小,茎蘖cv为14.O%～15.7%.穗粒数、千粒重及单穗重明显较高,分别为:42.1～58.2粒、43.0～50.3g、1.84～2.93g,突出地表现了大穗大粒、穗重型品种的特性.在大面积生产上要获得高产,其种植密度应低于绵阳20号等品种.

Based on two factors variety and density three levels field experiment, the tiller characters of three wheat variety are made a preliminary study. Results showed that Miannong 6 unit stem tiller number is 2.08-4.74,effective spike rate of tiller is 54.3%-59.3%,both are less than Mianyang 20（CK1）.Compared with CK the productive tiller stage is the main difference of unit stem tiller capacity （before 20th,dee）. About the difference of Miannong 6 is less between main stem and tiller, the CV （%） of stem tiller is 14.0%-15.7%, It is a grain number, 1000 seeds weight and a spike weight are obviously higher. They are： 42.8-58.2,43.0g- 50.3g and 1.84g-2.93g, all obviously character show out that are big spike, big grain and heavy spike. In order to achieve high yield, the cropping density should less than Mianyang 20 and so on.