中国农业科学 ›› 2018, Vol. 51 ›› Issue (20): 3887-3908.doi: 10.3864/j.issn.0578-1752.2018.20.007
谭德水1(), 林海涛1, 朱国梁2, 李子双3, 郭清福4, 吴小宾1, 刘兆辉1(
)
收稿日期:
2018-01-23
接受日期:
2018-06-25
出版日期:
2018-10-16
发布日期:
2018-10-16
作者简介:
联系方式:谭德水,E-mail:
基金资助:
DeShui TAN1(), HaiTao LIN1, GuoLiang ZHU2, ZiShuang LI3, QingFu GUO4, XiaoBin WU1, ZhaoHui LIU1(
)
Received:
2018-01-23
Accepted:
2018-06-25
Online:
2018-10-16
Published:
2018-10-16
摘要:
【目的】采用控释氮肥掺混磷钾等养分在冬小麦上一次性施用,揭示减肥、增效、节本增收方面的效应,为冬小麦轻简化生产提供技术支撑。【方法】于2011—2012、2012—2013、2013—2014年,选择在黄淮海东部不同冬小麦生态区进行控释氮肥随小麦播种一次性施用试验。与普通氮肥分次施用(农民习惯施肥(FP)和优化施肥(OPT))对比,通过设置控释氮肥a等量氮素投入(CRFa)、控释氮肥a和控释氮肥b分别减量20%氮素投入(80%CRFa与80%CRFb)处理,经过3年31个试验对产量、养分效率、节本增收等进行研究。【结果】控释氮肥在冬小麦上一次性施用总体表现稳产或小幅增产趋势,相比普通氮肥分次施用(OPT)3年平均增产2.6%,增产点位数占全部试验点数量的83.9%。减少20%氮素投入的控释氮肥处理稳产增产点比例显著降低,两种控释氮肥中生物可降解型控释氮肥a的产量效应优于有机树脂包膜控释氮肥b;4种施肥模式随土壤质地由轻到重平均施氮增产分别为10.7%、17.4%增长到19.7%,控释氮肥应用在砂质或壤质土壤的相对增产效应(较OPT)优于黏质土壤;在中低产量水平下控释氮肥一次性施用相对产量效应(较OPT)优于高产水平地块。CRFa、80%CRFa和80%CRFb处理相比农民习惯施肥(FP)分别节约氮素投入14.7、59.3、59.3 kg N·hm-2,CRFa、80%CRFa和80%CRFb处理相比OPT氮肥偏生产力(PFPN)分别提高0.4、7.32、6.93 kg·kg-1,氮肥表观利用率分别提高1.5、8.6、6.2个百分点。CRFa和80%CRFa处理相比OPT节本增收分别达到543.8、150.3元/hm2。【结论】冬小麦上控释氮肥配合其他养分底肥一次性施用、后期不再追肥的方式相比习惯施肥及普通肥料优化施用在产量稳定性、提高氮效率、节约劳动力及节本增收等方面优势明显。本试验条件下CRFa和80%CRFa处理效果较好。推荐减少20%氮用量CRFa施肥模式在黄淮东部冬小麦生产应用。
谭德水, 林海涛, 朱国梁, 李子双, 郭清福, 吴小宾, 刘兆辉. 黄淮海东部冬小麦一次性施肥的产量效应[J]. 中国农业科学, 2018, 51(20): 3887-3908.
DeShui TAN, HaiTao LIN, GuoLiang ZHU, ZiShuang LI, QingFu GUO, XiaoBin WU, ZhaoHui LIU. Effect of One-off Fertilization on Winter Wheat Yield in Huang-Huai-Hai East Region[J]. Scientia Agricultura Sinica, 2018, 51(20): 3887-3908.
表1
不同年份各处理的籽粒产量"
处理 Treatment | 2011-2012 | 2012-2013 | 2013-2014 | 2011-2014 | ||||
---|---|---|---|---|---|---|---|---|
产量 Yield (kg·hm-2) | 增幅 Increase (%) | 产量 Yield (kg·hm-2) | 增幅 Increase (%) | 产量 Yield (kg·hm-2) | 增幅 Increase (%) | 3年平均产量 Average yield (kg·hm-2) | 增幅 Increase (%) | |
PK | 5874±606c | - | 5582±1167b | - | 6750±1241d | - | 6156±1163c | - |
FP | 6656±449b | 13.3 | 6591±734a | 18.1 | 7946±1187bc | 17.7 | 6705±1095b | 16.6 |
OPT | 6743±429ab | 14.8 | 6711±839a | 20.2 | 8085±1106ab | 19.8 | 6803±1091ab | 18.5 |
CRFa | 6915±531a | 17.7 | 6878±822a | 23.2 | 8283±1022a | 22.7 | 6968±1076a | 21.5 |
80%CRFa | 6764±563ab | 15.2 | 6611±935a | 18.4 | 7863±1139bc | 16.5 | 6750±1089b | 16.6 |
80%CRFb | 6629±566b | 12.9 | 6576±1050a | 17.8 | 7820±1232c | 15.8 | 6666±1166b | 15.5 |
表2
不同施肥处理成本收益分析"
处理 Treatment | 产值 Production income (yuan/hm2) | 追肥劳动力成本 Labor cost (yuan/hm2) | 氮肥成本 N cost (yuan/hm2) | 收益 Benefit (yuan/hm2) | 较FP增收 Income of increasing (yuan/hm2) |
---|---|---|---|---|---|
FP | 15072.7 | 450 | 927.5 | 6695.3 | - |
OPT | 15322.5 | 450 | 870 | 7002.5 | 457.2 |
CRFa | 15703.3 | - | 1157 | 7546.3 | 1001 |
80%CRFa | 15077.9 | - | 925.1 | 7152.8 | 607.5 |
80%CRFb | 14937.1 | - | 1083.4 | 6853.7 | 308.4 |
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