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作物学报 ›› 2012, Vol. 38 ›› Issue (08): 1544-1550.doi: 10.3724/SP.J.1006.2012.01544

• 研究简报 • 上一篇    

农艺措施对成都平原两熟区机插超级稻长龄秧苗生长的影响

李旭毅1,2，池忠志1,2，姜心禄1,2，郑家国1,2,*，郭翔3   

  1. 1 四川省农业科学院作物研究所, 四川成都610066; 2 德阳市水稻专家大院, 四川广汉618300; 3 四川省农业气象中心, 四川成都610071
  • 收稿日期:2011-12-28 修回日期:2012-04-15 出版日期:2012-08-12 网络出版日期:2012-05-11
  • 通讯作者: 郑家国, E-mail: zhjguo580@126.com, Tel: 028-84504245
  • 基金资助:

    本研究由国家“十一五”科技支撑计划重大项目(2004BA520A05)，国家公益性行业(农业)科研专项(200903050-4)和农业部重大研究专项(超级稻配套栽培技术开发与技术集成)资助。

Effects of Agronomic Measures on Mechanical Transplanting Long-Age Seedlings of Super Rice in Rapeseed (Wheat)-Rice Planting Area of Chengdu Basin

LI Xu-Yi,CHI Zhong-Zhi,JIANG Xin-Lu,ZHENG Jia-Guo*,Guo Xiang   

  1. 1 Crop Research Institute of Sichuan Academy of Agricultural Sciences ,Chengdu 610066, China; 2 Courtyard of Rice Expert in Deyang City, Guanghan 618300, China; 3 Sichuan Agricultural Meteorology Center ,Chengdu 610071, China
  • Received:2011-12-28 Revised:2012-04-15 Published:2012-08-12 Published online:2012-05-11
  • Contact: 郑家国, E-mail: zhjguo580@126.com, Tel: 028-84504245

PDF

878

被引次数

24

摘要： 以超级稻II优602为材料，研究了播种量、播期和育秧盘类型等农艺措施对成都平原稻麦(油)两熟区机插稻长龄秧苗生长的影响。结果表明: (1)正常播期下超级稻长龄秧在播种后30~42 d，发根力虽有降低，但群体数量减少缓慢，根冠比、茎基宽度、单位苗高干重等指标均有所增加; 而播种后42~54 d，群体数量急剧减少，根冠比和单位苗高干重下降，发根力进一步降低。(2)推迟播期有利于提高苗床秧苗数量，但根冠比、单位苗高干重以及发根力等指标并无明显的提高甚至有所降低。(3)播种量为431.03~554.19 g m-2时有利于兼顾长龄秧群体数量和个体素质。(4)当秧龄超过一定时期(播种后40 d左右)后穴盘育秧的效果更佳，无论进一步延长秧龄还是适当增加播种密度，均减缓秧苗素质和群体数量的下降。以上结果表明，在成都平原旱育方式下机插稻长龄秧的培育播期选择在4月15日左右，播种量选择431.03~554.19 g m-2，秧龄在42 d左右，秧盘选择塑料硬穴盘为宜。

关键词: 机插稻, 长龄秧, 农艺措施, 秧苗生长

Abstract: The effects of agronomic measures including sowing norm, date and types of seedling tray on rice long-age seedlings, were studied by using super rice, II-you 602, in wheat (rapeseed)-rice planting area in Chengdu basin. The results indicated that in normal sowing time, though rooting ability of long-age seedlings decreased from 30 to 42 days after sowing, the population size of seedlings declined slowly, root-shoot ratio, width of stem base and dry weight per unit seedling height increased. However, between 42 and 54 days after sowing, the population size of seedlings decreased sharply, root-shoot ratio and dry weight per unit seedling height began to decline, and rooting ability of long-age seedlings continued to fall. With postponement of sowing time, the population size of seedlings increased, but root-shoot ratio, rooting ability and dry weight per unit seedling height not improved dramatically and even declined. Thesowing norm of 431.03 to 554.19 g m-2 was beneficial to population size and individual quality. The effects of plastic cell-tray were better when seedling age over a certain phase (about 40 days after sowing), the descending of seedling quality and population size was slower, whether further seedling age was prolonged or sowing norm properly increased. The above results showed that sowing date of around April 15, sowing norm of 431.03 to 554.19 g m-2, using hard plastic cell-tray and seedling age of about 42 days were good for raising mechanical transplanting long-age seedlings by the dry raising method of rice seedlings in Chengdu basin.

Key words: Rice transplanting by machine, Long-age seedling, Agronomic measures, Seedling growing

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