播量及秧土对杂交水稻制种父本机插长秧龄秧苗素质的影响  

Effects of Sowing Rate and Seedling Soil on Seedling Quality of Male Parent Machine Transplanted Long Seedling Age in Hybrid Rice Seed Production

作　　者：孙建荣[1] 王启琛 章海坡 赵琴[1] 李玲[1] 张兆婷 SUN Jian-rong;WANG Qi-chen;ZHANG Hai-po(Jiangsu Hongqi Seed Industry Co.,Ltd.,Taizhou,Jiangsu 225300)

机构地区：[1]江苏红旗种业股份有限公司,江苏泰州225300

出　　处：《安徽农业科学》2020年第24期33-35,共3页Journal of Anhui Agricultural Sciences

摘　　要：以中莲优950制种父本为材料,比较了2个播量(2、3粒/穴)和2种秧土(自然土、1/2自然土+1/2商品育秧基质)条件下的长秧龄秧苗素质。结果表明,增加播量会抑制机插秧苗的生长,同时也会推迟始穗期,增加播始历期天数;自然土拌合育秧基质不能持续为机插秧苗提供养分,致使秧苗在5叶以后开始出现叶龄滞后,植株矮小,黄叶偏多的情况,同时秧苗其他地上部形态较差,秧苗地下部素质偏低。采用2粒/穴播量、自然土做秧土处理的秧苗在同一移栽期的条件下,始穗期与对照无差异,并且秧苗地上部形态高大、粗壮,根系发达,秧苗素质最好。With Zhonglianyou 950 seed female parent as the test material,we compared the seedling quality with long seedling age under two sowing quantities and two seedling soils.Results showed that enhancing sowing quality restrained the growth of machine plug seedlings,prolonged the initial heading stage,enhanced the days of seeding start period.Natural soil mixed with the seedling substrate could not continuously provide nutrients for mechanically inserted seedlings,so that the leaf age lagged after 5-leaf seedlings with small plant and more yellow leaves.At the same time,other above-ground morphology of seedling were relatively poor with low quality of underground part seedling.Treatment of 2 seeds/hole and natural soil as seedling soil showed no differences with the control at initial heading stage under the same transplanting date,with big and strong above-ground morphology of seedling,developed root system and good seedling quality.

关 键 词：杂交水稻 播量 秧土 秧苗素质 

分 类 号：S511[农业科学—作物学]