不同播期与基本苗对小麦生长发育及产量构成的影响 |
| |
引用本文: | 何井瑞,陈之政,张洪树,陈雪梅,韩必荣,刘海红,杜金河. 不同播期与基本苗对小麦生长发育及产量构成的影响[J]. 中国农学通报, 2015, 31(33): 37-47. DOI: 10.11924/j.issn.1000-6850.casb15070102 |
| |
作者姓名: | 何井瑞 陈之政 张洪树 陈雪梅 韩必荣 刘海红 杜金河 |
| |
作者单位: | 宿迁市农业技术综合服务中心 江苏 宿迁223800,宿迁市农业技术综合服务中心 江苏 宿迁223800,宿迁市农业技术综合服务中心 江苏 宿迁223800,宿迁市农业技术综合服务中心 江苏 宿迁223800,宿迁市农业技术综合服务中心 江苏 宿迁223800,宿迁市农业技术综合服务中心 江苏 宿迁223800,宿迁市农业技术综合服务中心 江苏 宿迁223800 |
| |
基金项目: | 江苏省农业三新工程“现代农业(稻麦)科技综合示范推广”项目(SXGC[2013]309 和SXGC[2014]257);宿迁市科技支撑计划项目(农业)“宿迁市稻麦丰产节水节肥技术集成研究与示范”(L201310),“稻麦周年高产高效低碳生产技术集成示范”(L201409);江苏省“333 工程”科研项目资助计划(2014 年度);国家小麦产业技术体系项目(CARS-3-2-13)国家现代农业产业技术体系苏中综合试验站(小麦方面)。 |
| |
摘 要: | 为探明稻麦周年生产条件下小麦种植适宜播期和基本苗组合,于2012—2014 年在江苏省沭阳县进行了播期和基本苗组合试验,研究了不同播期(10 月10 日、10 月17 日、10 月24 日、10 月31 日和11 月7日、11 月14 日)和基本苗(180 万/hm2、270 万/hm2、360 万/hm2、450 万/hm2、540 万/hm2)条件下小麦生长发育及产量构成。结果表明,出苗率主要受播期影响,迟播降低明显;随着播期推迟小麦叶龄逐渐变小,全生育期缩短,缩短天数少于播期推迟天数。基本苗处理对出苗率和叶龄影响不大。相同生育阶段,同一播期随着基本苗的增加茎蘖总数增多,相同基本苗处理随着播期的推迟茎蘖总数减少。播期对小麦株高、穗下节间以及穗长影响明显。单产随着播期推迟先升后降,不同播期和基本苗处理对产量构成影响显著或极显著。因此,淮北地区稻茬麦遇冷冬适宜播期在10 月17—24 日,遇暖冬适宜播期在10 月17—31日,最佳基本苗360万/hm2。
|
关 键 词: | PEG-6000 PEG-6000 干旱胁迫 种子 亚麻 |
收稿时间: | 2015-07-18 |
修稿时间: | 2015-11-09 |
Effect of Different Sowing Dates and Basic Seedlings on Growth and Yield Formation of Wheat |
| |
Abstract: | In order to evaluate the suitable combination of sowing date and basic seedlings under the condition of rice and wheat annual rotation, this experiment was performed from 2012 to 2014 at Shuyang County, a northern area of Jiangsu Province. The growth period and yield formation of wheat were investigated under six different sowing dates (October 10th, 17th, 24th, 31st, and November 7th, 14th) and different basic seedlings (1.8,2.7, 3.6, 4.5 and 5.4 million /hm2). We found that the seedling emergence rates were affected by the sowing date, and it was low under a postponed sowing date. With the delay of the sowing date, the number of wheat leaves decreased and the total growth period of wheat was shortened, but the shortened days were less than the delayed days. Basic seedlings had little influence on the emergence rate and leaves age. At the same stage, the total tillers of wheat sown on the same sowing date increased with the basic seedlings increase, while those ofwheat having the same basic seedlings decreased as the sowing date delayed. The plant height, length of internode below the ear and ear-length were significantly affected by the sowing date. With the sowing date being postponed, the yield increased firstly and decreased afterwards, and it was significantly affected by different sowing dates and basic seedlings. All in all, the suitable sowing dates of Huaibei wheat sown in the rice field were during October 17th-24th in cold winter while during 17th -31st in warm winter. The suitable basic seedlings of Huaibei wheat was 3.6 million per hectare. |
| |
Keywords: | sowing date basic seedling growth and development yield formation |
本文献已被 CNKI 等数据库收录! |
| 点击此处可从《中国农学通报》浏览原始摘要信息 |
|
点击此处可从《中国农学通报》下载全文 |
|