摘要
旨在筛选出冬小麦较适宜的播期和播量组合,以适应冬前积温不断增加的环境变化。以‘新麦29’作为研究对象,于2016—2017年度在河南省北部辉县市开展二因素裂区田间试验,主区为播期(10月12日、18日和24日),副区为播量(基本苗210万、300万、390万/hm^2),探索不同播期和播量对‘新麦29’的产量及其构成因素的影响。结果显示:10月12日播期的籽粒容重显著低于其他2个播期的籽粒容重,而随着播量不断增加其平均容重亦随之增加;播期对穗数、穗粒数、千粒重3个产量构成因素的影响均显著,但对籽粒产量的影响不显著。播量对产量及穗数、穗粒数2个构成因素的影响均呈现出差异水平显著。不同播期和播量互作效应对小麦籽粒产量与单位面积穗数两者均呈现出差异性显著。最佳播期是10月12日,基本苗300万/hm^2为较适宜的播量;‘新麦29’产量潜力的播期是10月12日—18日,与其对应的适宜播量为基本苗300万~390万/hm^2。
To screen out the suitable combination of sowing date and planting density of winter wheat,and adapt to the environment change of increaing accumulative temperature before winter,taking‘Xinmai 29’as the object,a field experiment with split plot design was conducted at Huixian City in the northern Henan Province during 2016-2017.The main plots were three sowing dates of October 12th,18th and 24th,and the split plots were three planting densities of 210×10^4,300×10^4 and 390×10^4 seedlings/hm2.The effects of different sowing dates and planting densities on yield and yield components of‘Xinmai 29’were explored.The results showed that,the grain volume weight of October 12th sowing was significantly lower than those of the other two sowing dates.The average grain volume weight also increased with the increasing planting density.All three yield components(the number of spike,grain number per spike and 1000-grain weight)of wheat was significantly influenced by the sowing date.However,the impact of sowing date on grain yield was not significant.There were significant difference levels for yield,the number of spike and grain number per spike with planting density.The interaction effect between sowing date and planting density had significant difference for grain yield and spike number per area.October 12th was the best sowing date with the suitable density of 300×104 seedlings/hm2.The suitable sowing date for the yield potential of‘Xinmai29’was October 12th to 18th,and the corresponding suitable planting density of basic seedlings was 300×10^4-390×10^4/hm^2.
作者
李晓航
马华平
Li Xiaohang;Ma Huaping(Xinxiang Academy of Agricultural Science,Xinxiang Henan 45300)
出处
《中国农学通报》
2019年第29期14-19,共6页
Chinese Agricultural Science Bulletin
基金
现代农业产业技术体系建设专项(CARS-3-2-35)
河南省重大科技专项“小麦新品种选育与示范”(151100110400)
关键词
新麦29
二因素裂区
田间试验
播期
播量
容重
产量
产量构成因素
Xinmai 29
split plot design
field experiment
sowing date
planting density
grain volume weight
yield
yield components
