Crops ›› 2019, Vol. 35 ›› Issue (5): 192-195.doi: 10.16035/j.issn.1001-7283.2019.05.031

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Comparison of Yield Formation Between Winter Wheat Jimai 22 and Spring Wheat Jinqiang 8

Ma Yifeng,Liang Qian,Ge Junzhu,Xin Decai   

  1. College of Agronomy & Resources and Environment, Tianjin Agricultural University, Tianjin 300384, China
  • Received:2019-05-23 Revised:2019-08-14 Online:2019-10-15 Published:2019-11-07
  • Contact: Junzhu Ge

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Abstract:

In order to explore differences in yield formation process between spring wheat and winter wheat, a field experiment were conducted from October 2016 to June 2017 to study the growth duration, leaf area index (LAI), dry matter accumulation (DMA) and yield components of winter wheat Jimai 22 and spring wheat Jinqiang 8. The results showed that the seedling days of spring wheat were 8d longer than winter wheat, but the vegetative growth duration were shortened by 77-78d, and the grain filling period was prolonged by 1-2d, and so the whole growth period was shortened by 143-144d compared with winter wheat. Compared to winter wheat, there were no significant difference in LAI of spring wheat at jointing and anthesis stage, but was higher by 6.34%-7.67% at grain filling stage. There were no siginificant difference in DMA at each growth stage among spring wheat and winter wheat. With the increase of sowing amount of spring wheat, the ears number increased by 2.35%-5.29%, the 1000-grain weight increased by 4.28%-5.13%, the number of grains per spike of decreased by 1.4-2.3 respectively, compared with those of winter wheat. There was no significant difference in actual yields and theoretical yields between spring wheat and winter wheat. The stable yield of spring wheat can be achieved by increasing the amount of sowing, spikes number, maintaining stable LAI and DMA, which can provide technical support for the reform of wheat-summer maize planting system, and to achieve double machine grain harvest in wheat and summer maize.

Key words: Spring wheat, Winter wheat, Leaf area index, Dry matter, Yield

Table 1

Growth process of winter wheat and spring wheat 月/日 Month/day"

地点Site 处理
Treatment		 播种期
Sowing		 出苗期
Seedling		 越冬期
Overwinter		 返青期
Greening		 拔节期
Jointing		 开花期
Anthesis		 收获期
Harvest
蔡公庄 冬小麦Winter wheat 10/5 10/11 12/21 2/26 4/10 5/8 6/11
Caigongzhuang 春小麦Spring wheat 2/25 3/11 4/20 5/14 6/18
梁头 冬小麦Winter wheat 10/5 10/11 12/21 2/26 4/10 5/9 6/12
Liangtou 春小麦Spring wheat 2/25 3/11 4/20 5/16 6/20

Fig.1

The leaf area index of spring wheat and winter wheat at different growth stages"

Fig.2

The dry matter accumulation of spring wheat and winter wheat at different growth stages"

Table 2

The comparison of yields and its components factor between winter wheat and spring wheat"

地点
Site		 处理
Treatment		 实际产量
Actual yield
(kg/hm2)		 理论产量
Theoretical yield
(kg/hm2)		 基本苗
Seedlings
(×104/hm2)		 穗数
Spikes number
(×104/hm2)		 穗粒数
Grains per
spike		 千粒重
1000-grain weight (g)		 收获指数
Harvest
index
蔡公庄 冬小麦Winter wheat 6 350.3a 6 699.0a 335.2b 637.5ab 26.8a 39.21a 0.414a
Caigongzhuang 春小麦Spring wheat 6 563.6a 6 776.9a 624.6a 652.5a 25.4ab 40.89a 0.416a
梁头 冬小麦Winter wheat 5 868.0b 6 034.5b 351.8b 595.5b 26.5a 38.58a 0.404a
Liangtou 春小麦Spring wheat 5 987.3b 6 129.0b 610.9a 627.0ab 24.2b 40.56a 0.417a
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