WANG Cheng,SUN Li,ZHANG Xi-juan,et al.Screening and Matching Techniques of Rice Direct-seeding?in Cold Region ⅠMeasures of Improving Directseeding Japonica?Rice Emergence Rate[J].HEILONGJIANG AGRICULTURAL SCIENCES,2015,(12):30-32.[doi:10.11942/j.issn1002-2767.2015.12.0030]
寒地直播稻品种筛选及配套技术研究 Ⅰ 提高直播粳稻出苗率的措施
- Title:
-
Screening and Matching Techniques of Rice Direct-seeding?in Cold Region Ⅰ?Measures of Improving Directseeding Japonica?Rice Emergence Rate
- 文章编号:
- 1002-2767（2015）12-0030-03
- 分类号:
- S511
- 文献标志码:
- A
- 摘要:
- 为了进一步提高种子出苗率，从温度、种子催芽、覆土深度及供氧剂等方面研究提高直播稻出苗率的措施，探讨各要素与直播水稻出苗率的关系。结果表明：早播出苗率低于晚播，播种至发芽的天数随播期拖后而缩短。种子催芽日数以1~3 d，催芽长度1 mm以内，出苗率为最佳。在0.5~3.0 cm时，随着覆土深度的增加，出苗率下降，鞘叶芽率和枯死不出芽率增多。种子与供氧剂用量比在1∶1以内，出苗率随供氧剂用量增加,出苗率增加,供氧剂用量超过种子量以后,出苗率开始下降。?
- Abstract:
- In order to further improve the germination rate of rice seed，the measures of improving direct-seeding Japonica?rice emergence rate were studied from temperature,seed pregermination,the depths of soil cultivated and oxygen-supplier.The results indicated that emergence rate was lower in early planting than in later.The days from sowing to sprouting would be shortened with sowing date delaying.The number of days from seed pregermination was 1~3 days and length within 1 mm,the optimum emergence rate was determined.When the depths of soil cultivated （0.5~3.0 cm）,emergence rate was decreasing with the depths of soil cultivated increasing.When the proportion between seed and oxygen-supplier was 1∶1,emergence rate was increasing with oxygen-supplier increasing,but emergence rate was decreasing with oxygen-supplier proportion more than seed.
参考文献/References:
[1]张喜娟，来永才，王俊河，等.黑龙江直播稻的发展现状与对策[J].黑龙江农业科学，2015（8）：142-144.
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备注/Memo
收稿日期：2015-09-16