中国农业科学 ›› 2020, Vol. 53 ›› Issue (17): 3467-3478.doi: 10.3864/j.issn.0578-1752.2020.17.005
仝锦(),孙敏,任爱霞,林文,余少波,王强,冯玉,任婕,高志强()
收稿日期:
2020-02-10
接受日期:
2020-06-04
出版日期:
2020-09-01
发布日期:
2020-09-11
通讯作者:
高志强
作者简介:
仝锦,E-mail:基金资助:
TONG Jin(),SUN Min,REN AiXia,LIN Wen,YU ShaoBo,WANG Qiang,FENG Yu,REN Jie,GAO ZhiQiang()
Received:
2020-02-10
Accepted:
2020-06-04
Online:
2020-09-01
Published:
2020-09-11
Contact:
ZhiQiang GAO
摘要:
【目的】通过明确不同产量水平小麦品种植株干物质积累运转、土壤水分消耗与籽粒产量形成的关系,挖掘小麦品种生产潜力,为小麦产量提升提供依据。【方法】本试验于2016—2018年在山西省洪洞县进行,选择4个不同产量水平小麦品种(烟农999、山农29、邯农1412和良星67),比较品种间植株干物质积累运转、土壤耗水的差异及其与产量形成的关系,揭示品种间产量和水分利用效率存在差异的原因。【结果】连续2年烟农999、山农29产量高于9 000 kg·hm-2,达到超高产水平,邯农1412产量均高于8 000 kg·hm-2,达到高产水平,而良星67产量低于7 500 kg·hm-2,未达到高产水平。较良星67,3个高产品种提高了播种期—拔节期、拔节期—开花期、开花期—成熟期各阶段干物质积累量,分别达12%—57%、5%—62%、11%—47%,显著提高了花前干物质运转量、花后干物质积累量,分别达1%—85%、11%—48%;提高了生育期总耗水量,达17%—29%,显著提高了花前2个阶段耗水量,分别达11%—41%、8%—32%;最终,提高穗数7%—24%、穗粒数4%—13%、千粒重1%—9%,产量20%—37%,水分利用效率2%—14%。较高产品种邯农1412,超高产品种烟农999显著提高了播种期—拔节期、拔节期—开花期干物质积累量和花前干物质运转量,分别达32%—33%、41%—55%、49%—50%,提高了花前2个阶段耗水量,分别达5%—7%、3%—9%,提高穗数8%—16%、穗粒数5%—6%,产量10%—11%;山农29显著提高了花后干物质积累量,达13%,显著提高了花后耗水量,达6%—26%,千粒重提高4%—6%,产量提高5%—6%。2个试验年度4个小麦品种的相关分析表明,花前2个阶段耗水量与花前干物质运转量显著相关,花前干物质运转量与穗数、产量显著相关;花后耗水量与花后干物质积累量显著相关,花后干物质积累量与千粒重、产量显著相关。此外,3个高产品种较良星67,每多消耗1 mm土壤水分可增产16—40 kg·hm-2·mm-1,且超高产品种土壤耗水对籽粒产量的贡献更大,其水分利用效率较高产品种提高6%—22%。【结论】3个高产品种提高了花前干物质运转量和花前2个阶段耗水量,有利于优化产量构成因素,实现增产、增效。然而不同小麦品种高产途径亦有所差异,烟农999由于生育前期利用土壤水分能力强,促进花前干物质向籽粒运转,通过提高穗数和穗粒数实现超高产;山农29由于生育后期利用土壤水分能力强,促进花后干物质积累,通过提高千粒重实现超高产。
仝锦,孙敏,任爱霞,林文,余少波,王强,冯玉,任婕,高志强. 高产小麦品种植株干物质积累运转、土壤耗水与产量的关系[J]. 中国农业科学, 2020, 53(17): 3467-3478.
TONG Jin,SUN Min,REN AiXia,LIN Wen,YU ShaoBo,WANG Qiang,FENG Yu,REN Jie,GAO ZhiQiang. Relationship Between Plant Dry Matter Accumulation, Translocation, Soil Water Consumption and Yield of High-Yielding Wheat Cultivars[J]. Scientia Agricultura Sinica, 2020, 53(17): 3467-3478.
表2
不同品种产量及其构成因素的差异"
年份 Year | 品种 Cultivar | 穗数 Ear number (×104·hm-2) | 穗粒数 Grain number per ear | 千粒重 1000-grain weight (g) | 产量 Yield (kg·hm-2) | 水分利用效率 WUE (kg·hm-2·mm-1) |
---|---|---|---|---|---|---|
2016-2017 | 烟农999 Yannong999 | 760.00a | 33.43a | 43.68c | 9916.43a | 24.76a |
山农29 Shannong29 | 715.45b | 31.19b | 47.24a | 9502.36b | 22.47b | |
邯农1412 Hannong1412 | 701.25b | 31.98b | 44.55b | 8982.47c | 20.30d | |
良星67 Liangxing67 | 652.75c | 29.92c | 43.12c | 7234.28d | 21.64c | |
2017-2018 | 烟农999 Yannong999 | 698.13a | 38.95a | 42.97b | 9889.28a | 24.27a |
山农29 Shannong29 | 615.94b | 37.08b | 44.07a | 9315.04b | 22.61b | |
邯农1412 Hannong1412 | 603.75b | 36.65b | 42.27b | 8861.88c | 22.09b | |
良星67 Liangxing67 | 564.97c | 34.33c | 40.81c | 7401.75d | 21.59c |
表3
不同品种花前干物质运转和花后干物质积累的差异"
年份 Year | 品种 Cultivars | 花前干物质量DMABA | 花后干物质量DMAAA | |||
---|---|---|---|---|---|---|
运转量TA (kg·hm-2) | 运转率 TR (%) | 籽粒贡献率 CG (%) | 积累量 AA (kg·hm-2) | 贡献率 CG (%) | ||
2016-2017 | 烟农999 Yannong999 | 3874.58a | 27.04a | 39.07a | 6041.85c | 60.93d |
山农29 Shannong29 | 2374.08c | 21.48c | 24.94d | 7128.28a | 75.06a | |
邯农1412 Hannong1412 | 2608.43b | 25.66b | 29.29c | 6294.04b | 70.71b | |
良星67 Liangxing67 | 2252.35d | 24.45b | 31.75b | 4831.93d | 68.25c | |
2017-2018 | 烟农999 Yannong999 | 3934.94a | 27.01a | 40.59a | 5759.34c | 59.41c |
山农29 Shannong29 | 2146.97c | 19.87d | 23.04c | 7168.07a | 76.96a | |
邯农1412 Hannong1412 | 2633.00b | 25.16b | 28.60b | 6318.88b | 71.40b | |
良星67 Liangxing67 | 2124.88c | 22.82c | 29.10b | 5176.87d | 70.90b |
表4
不同品种土壤水分消耗对籽粒产量的贡献"
品种 Cultivar | 2016-2017 | 2017-2018 | ||
---|---|---|---|---|
总耗水量 TWC (mm) | 单位耗水下的增产量 YIUPWC (kg·hm-2·mm-1) | 总耗水量 TWC (mm) | 单位耗水下的增产量 YIUPWC (kg·hm-2·mm-1) | |
烟农999 Yannong999 | 400.56c | 40.53a | 407.62a | 38.40a |
山农29 Shannong29 | 423.03b | 25.59b | 412.09a | 27.63b |
邯农1412 Hannong1412 | 442.64a | 16.15c | 401.24a | 25.01b |
良星67 Liangxing67 | 364.38d | —— | 342.85b | —— |
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