中国农业科学 ›› 2020, Vol. 53 ›› Issue (10): 2020-2033.doi: 10.3864/j.issn.0578-1752.2020.10.009
蒋龙刚1,黄明1,3,宋庆赟1,苑爱静1,李嘉华1,邱炜红1,2(),王朝辉1,2(
)
收稿日期:
2019-08-05
接受日期:
2019-09-30
出版日期:
2020-05-16
发布日期:
2020-05-22
通讯作者:
邱炜红,王朝辉
作者简介:
蒋龙刚,E-mail:1490768260@qq.com。
基金资助:
JIANG LongGang1,HUANG Ming1,3,SONG QingYun1,YUAN AiJing1,LI JiaHua1,QIU WeiHong1,2(),WANG ZhaoHui1,2(
)
Received:
2019-08-05
Accepted:
2019-09-30
Online:
2020-05-16
Published:
2020-05-22
Contact:
WeiHong QIU,ZhaoHui WANG
摘要:
【目的】 当前国内已有的小麦氮肥用量推荐方法,尤其是基于测土进行的推荐施肥方法,都存在取样量大、测试工作量大和成本较高的问题,难以被农技推广工作者和小农户接纳与应用推广。为此,本文就一种至少2—3年有效的氮肥用量推荐方法进行研究。【方法】 以低有机质含量土壤维持或提高土壤肥力、高有机质土壤降低环境风险为目的,建立基于土壤有机质含量的旱地小麦施氮量推荐方法,施氮量(kg N·hm-2)=目标产量需氮量(kg N·hm-2)×施氮系数(Nf)。施氮系数(Nf)由表层土壤有机质含量高低确定。应用这一方法在渭北旱塬冬小麦种植区6县进行了3年田间试验。【结果】 基于有机质推荐氮肥施用量平均为161 kg N·hm-2,比农户习惯施肥(平均为190 kg N·hm-2)减少了15.3%;而相应的冬小麦平均籽粒产量为5 817 kg·hm-2,比农户习惯施肥显著提高了9.0%。此外,与农户习惯施肥相比,基于有机质含量推荐施肥的经济效益增加了1 451元/hm2,提高19.3%,小麦收获期1 m土层的硝态氮残留降低了39 kg·hm-2,显著降低28.3%。【结论】 基于土壤有机质含量推荐施肥降低了氮肥施用量并提高了冬小麦籽粒产量,增加了经济效益,降低了土壤硝态氮残留量和施肥的环境风险,可在旱地小麦区推广应用。
蒋龙刚,黄明,宋庆赟,苑爱静,李嘉华,邱炜红,王朝辉. 基于土壤有机质含量推荐的旱地冬小麦施氮量研究[J]. 中国农业科学, 2020, 53(10): 2020-2033.
JIANG LongGang,HUANG Ming,SONG QingYun,YUAN AiJing,LI JiaHua,QIU WeiHong,WANG ZhaoHui. Research on Nitrogen Fertilizer Application Recommended Method Based on Soil Organic Matter in Dryland Wheat Production[J]. Scientia Agricultura Sinica, 2020, 53(10): 2020-2033.
表1
各试验地点开始前土壤的基本理化性状和0—100 cm土层硝态氮累积量"
试验地点Experimental sites | pH | 0—20 cm土层 有机质含量 Organic matter content in 0-20 cm soil layer (g·kg-1) | 0—40 cm土层 硝态氮含量 Nitrate-N content in 0-40 cm soil layer (mg·kg-1) | 0—40 cm土层 有效磷含量 Available P content in 0-40 cm soil layer (mg·kg-1) | 0—40 cm土层 有效钾含量 Available K content in 0-40 cm soil layer (mg·kg-1) | 0—100 cm土层 硝态氮积累量 Nitrate residue content in 0-100 cm soil layer (kg·hm-2) |
---|---|---|---|---|---|---|
彬县BX | 8.3 | 14.3 | 11.8 | 11.3 | 131 | 153 |
凤翔FX1 | 8.3 | 13.6 | 16.8 | 11.6 | 121 | 292 |
凤翔FX2 | 8.1 | 11.1 | 17.4 | 9.9 | 106 | 153 |
合阳HY | 8.5 | 14.0 | 7.7 | 10.0 | 187 | 251 |
蒲城PC | 8.2 | 12.1 | 5.2 | 11.0 | 173 | 123 |
耀州YZ1 | 8.3 | 16.0 | 9.3 | 14.7 | 180 | 74 |
耀州YZ2 | 8.1 | 15.6 | 54.8 | 4.9 | 135 | 410 |
永寿YS | 8.2 | 12.4 | 10.9 | 11.3 | 110 | 104 |
平均Mean | 8.3 | 13.6 | 16.7 | 10.6 | 143 | 195 |
表3
2014—2017年不同处理施肥量"
生长季 Growing season | 试验地点 Experimental site | 氮肥用量N rate (kg N·hm-2) | 磷肥用量P rate (kg P2O5·hm-2) | 钾肥用量K rate (kg K2O·hm-2) | |||
---|---|---|---|---|---|---|---|
农户习惯施肥FP | 推荐施肥OFP | 农户习惯施肥FP | 推荐施肥OFP | 农户习惯施肥FP | 推荐施肥OFP | ||
2014—2015 | 彬县BX | 241 | 195 | 139 | 88 | 38 | 30 |
凤翔FX | 231 | 211 | 182 | 95 | 0 | 36 | |
合阳HY | 137 | 101 | 138 | 30 | 32 | 30 | |
蒲城PC | 213 | 136 | 144 | 61 | 69 | 30 | |
耀州YZ | 169 | 140 | 119 | 47 | 51 | 30 | |
永寿YS | 186 | 160 | 98 | 68 | 41 | 30 | |
平均Mean | 196 | 157 | 137 | 65 | 39 | 31 | |
2015—2016 | 彬县BX | 232 | 195 | 124 | 88 | 33 | 30 |
凤翔FX | 197 | 211 | 71 | 95 | 25 | 36 | |
合阳HY | 150 | 116 | 131 | 59 | 48 | 30 | |
蒲城PC | 199 | 163 | 112 | 73 | 27 | 30 | |
耀州YZ | 169 | 140 | 119 | 47 | 51 | 30 | |
永寿YS | 185 | 161 | 110 | 38 | 0 | 30 | |
平均Mean | 189 | 164 | 111 | 67 | 31 | 31 | |
2016—-2017 | 彬县BX | 221 | 200 | 130 | 90 | 39 | 30 |
凤翔FX | 203 | 203 | 101 | 98 | 30 | 35 | |
合阳HY | 140 | 106 | 129 | 54 | 30 | 30 | |
蒲城PC | 152 | 171 | 105 | 76 | 30 | 30 | |
耀州YZ | 203 | 140 | 96 | 106 | 30 | 30 | |
永寿YS | 188 | 148 | 114 | 63 | 30 | 30 | |
平均Mean | 185 | 161 | 113 | 81 | 32 | 31 | |
2014—2017 | 彬县BX | 231 | 197 | 131 | 89 | 37 | 30 |
凤翔FX | 210 | 208 | 118 | 96 | 18 | 36 | |
合阳HY | 142 | 108 | 133 | 48 | 37 | 30 | |
蒲城PC | 188 | 157 | 120 | 70 | 42 | 30 | |
耀州YZ | 180 | 140 | 111 | 67 | 44 | 30 | |
永寿YS | 186 | 156 | 107 | 56 | 24 | 30 | |
平均Mean | 190 | 161 | 120 | 71 | 34 | 31 |
表4
各试验地点2014—2017年的冬小麦产量与生物量"
生长季 Growing season | 试验地点 Experimental site | 产量 Yield(kg·hm-2) | 生物量Biomass(kg·hm-2) | ||
---|---|---|---|---|---|
农户习惯施肥FP | 推荐施肥OFP | 农户习惯施肥FP | 推荐施肥OFP | ||
2014—2015 | 彬县BX | 6731b | 7300a | 17478b | 20491a |
凤翔FX | 6931a | 7322a | 14582a | 15231a | |
合阳HY | 5236b | 6057a | 14603a | 15802a | |
蒲城PC | 5539b | 6139a | 11448b | 12128a | |
耀州YZ | 6298a | 6704a | 13625a | 14354a | |
永寿YS | 6419a | 6731a | 16910a | 18773a | |
平均Mean | 6192b | 6709a | 14774b | 16130a | |
2015—2016 | 彬县BX | 7721b | 8464a | 17244b | 25149a |
凤翔FX | 6345a | 6795a | 13164a | 13582a | |
合阳HY | 3126b | 3667a | 6664a | 8199a | |
蒲城PC | 2151a | 2309a | 3999a | 4638a | |
耀州YZ | 7098a | 7529a | 12845a | 13252a | |
永寿YS | 5559a | 6342a | 9663a | 10933a | |
平均Mean | 5333b | 5851a | 10597b | 12625a | |
2016—2017 | 彬县BX | 6364b | 6897a | 16132a | 17092a |
凤翔FX | 5798a | 6245a | 13494a | 14581a | |
合阳HY | 3754a | 3924a | 9275a | 9246a | |
蒲城PC | 1759a | 1939a | 4403a | 4790a | |
耀州YZ | 3145a | 3349a | 7022a | 7546a | |
永寿YS | 6082a | 6989a | 14990a | 15754a | |
平均Mean | 4484b | 4890a | 10889a | 11502a | |
2014—2017 | 彬县BX | 6939b | 7553a | 16951b | 20911a |
凤翔FX | 6358b | 6787a | 13747a | 14465a | |
合阳HY | 4039b | 4550a | 10180a | 11082a | |
蒲城PC | 3149b | 3462a | 6616b | 7185a | |
耀州YZ | 5514a | 5860a | 11164a | 11717a | |
永寿YS | 6020b | 6687a | 13855a | 15153a | |
平均Mean | 5337b | 5817a | 12086b | 13419a | |
变异来源 Source of variance | |||||
生长季Growing season | 51.9** | 91.4** | |||
地点Site | 163.1** | 178.3** | |||
处理Treatment | 28.0** | 23.6** |
表5
各试验点2014—2017年冬小麦产量构成要素"
生长季 Growing season | 试验地点Experimental site | 穗数 Spike number (×104·hm-2) | 穗粒数 Grain number per spike | 千粒重 1000-kernel weight (g) | |||
---|---|---|---|---|---|---|---|
农户习惯施肥FP | 推荐施肥OFP | 农户习惯施肥FP | 推荐施肥OFP | 农户习惯施肥FP | 推荐施肥OFP | ||
2014—2015 | 彬县BX | 686a | 759a | 31a | 29a | 31.9a | 32.9a |
凤翔FX | 475a | 499a | 38a | 37a | 38.6a | 39.4a | |
合阳HY | 636a | 618a | 25a | 28a | 32.4b | 35.6a | |
蒲城PC | 519a | 503a | 30a | 32a | 36.0a | 38.4a | |
耀州YZ | 573a | 584a | 26a | 25a | 38.0b | 40.1a | |
永寿YS | 560a | 594a | 42a | 43a | 27.5a | 27.7a | |
平均Mean | 575a | 593a | 32a | 33a | 34.1b | 35.7a | |
2015—2016 | 彬县BX | 734b | 910a | 20 a | 30a | 41.9a | 40.1a |
凤翔FX | 431a | 465a | 34a | 29b | 43.5b | 51.7a | |
合阳HY | 378a | 430a | 23a | 23a | 36.9a | 37.8a | |
蒲城PC | 245a | 295a | 24a | 22a | 33.4a | 33.3a | |
耀州YZ | 380a | 383a | 33a | 34a | 46.3a | 46.6a | |
永寿YS | 301a | 332a | 36a | 38a | 42.0a | 40.7a | |
平均Mean | 411b | 469a | 28a | 29a | 40.7a | 41.7a | |
2016—2017 | 彬县BX | 701a | 676a | 21a | 24a | 43.0a | 43.2a |
凤翔FX | 516b | 589a | 32a | 30a | 35.7a | 35.3a | |
合阳HY | 409a | 347a | 24a | 28a | 38.4a | 40.4a | |
蒲城PC | 227a | 236a | 22a | 23a | 35.3a | 35.9a | |
耀州YZ | 298a | 353a | 23a | 20a | 46.4a | 48.1a | |
永寿YS | 546a | 616a | 31a | 31a | 36.7a | 36.8a | |
平均Mean | 449a | 470a | 25a | 26a | 39.2a | 39.9a | |
2014—2017 | 彬县BX | 707a | 782a | 24b | 28a | 38.9a | 38.7a |
凤翔FX | 474b | 518a | 34a | 32a | 39.3b | 42.1 | |
合阳HY | 474a | 465a | 24a | 26a | 35.9b | 37.9a | |
蒲城PC | 330a | 345a | 25a | 26a | 34.9a | 35.8a | |
耀州YZ | 417a | 440a | 27a | 26a | 43.6a | 44.9a | |
永寿YS | 469a | 514a | 36a | 37a | 35.4a | 35.1a | |
平均Mean | 479b | 511a | 29a | 29a | 38.0b | 39.1a | |
变异来源 Source of variance | |||||||
生长季Growing season | 50.0** | 24.4** | 82.8** | ||||
地点Site | 71.7** | 47.0** | 85.4** | ||||
处理Treatment | 6.8* | 1.40 | 21.7** |
表6
各试验点2014—2017年冬小麦的氮吸收量、氮收获指数、氮肥偏生产力"
生长季 Growing season | 试验地点Experimental site | 氮吸收量 Shoot N uptake (kg·hm-2) | 氮收获指数 N harvest index (%) | 氮肥偏生产力 N partial productivity (kg·kg-1) | |||
---|---|---|---|---|---|---|---|
农户习惯施肥FP | 推荐施肥OFP | 农户习惯施肥FP | 推荐施肥OFP | 农户习惯施肥FP | 推荐施肥OFP | ||
2014—2015 | 彬县BX | 213.5b | 258.4a | 63.7a | 56.7b | 27.9b | 37.5a |
凤翔FX | 184.1a | 185.2a | 75.6a | 80.9a | 29.9a | 34.7a | |
合阳HY | 179.8a | 176.9a | 64.8a | 70.9a | 38.2b | 59.8a | |
蒲城PC | 169.2a | 169.5a | 73.4a | 75.3a | 26.0b | 45.1a | |
耀州YZ | 182.1a | 171.2a | 70.3a | 69.9a | 37.4b | 47.8a | |
永寿YS | 281.5a | 293.4a | 46.3a | 46.9a | 34.6b | 42.0a | |
平均Mean | 201.7a | 209.1a | 65.7a | 66.8a | 32.3b | 44.5a | |
2015—2016 | 彬县BX | 252.5b | 303.5a | 68.8a | 61.7b | 33.3b | 43.4a |
凤翔FX | 160.0a | 166.3a | 83.2a | 83.9a | 32.2a | 32.2a | |
合阳HY | 110.6a | 123.6a | 81.7a | 81.8a | 20.8b | 31.6a | |
蒲城PC | 81.6a | 85.7a | 80.0a | 79.5a | 10.8a | 14.2a | |
耀州YZ | 185.1a | 202.1a | 83.2a | 81.1a | 42.0b | 53.8a | |
永寿YS | 136.7a | 151.7a | 85.0a | 84.9a | 30.1b | 39.4a | |
平均Mean | 154.4b | 172.1a | 80.3a | 78.8a | 28.2b | 35.8a | |
2016—2017 | 彬县BX | 217.6a | 237.6a | 68.2a | 68.1a | 28.8b | 34.5a |
凤翔FX | 141.6a | 145.5a | 75.2a | 75.7a | 28.6a | 30.8a | |
合阳HY | 129.3a | 112.8a | 83.3a | 83.4a | 26.8b | 37.0a | |
蒲城PC | 64.9a | 69.3a | 77.8a | 78.4a | 11.6a | 11.3a | |
耀州YZ | 105.0a | 113.6a | 82.9a | 80.4a | 20.7a | 23.9a | |
永寿YS | 208.4a | 220.3a | 74.1a | 77.9a | 32.4b | 47.2a | |
平均Mean | 144.5a | 149.8a | 76.9a | 77.3a | 24.8b | 30.8a | |
2014—2017 | 彬县BX | 227.9b | 266.5a | 66.9a | 62.2b | 30.0b | 38.5a |
凤翔FX | 161.9a | 165.7a | 78.0a | 80.2a | 30.2a | 32.6a | |
合阳HY | 139.9a | 137.8a | 76.6a | 78.7a | 28.6b | 42.8a | |
蒲城PC | 105.2a | 108.2a | 77.1a | 77.7a | 16.1b | 23.5a | |
耀州YZ | 157.4a | 162.3a | 78.8a | 77.1a | 33.4b | 41.8a | |
永寿YS | 208.8a | 221.8a | 68.5a | 69.9a | 32.3b | 42.9a | |
平均Mean | 166.9b | 177.0a | 74.3a | 74.3a | 28.4b | 37.0a | |
变异来源 Source of variance | |||||||
生长季Growing season | 54.4** | 90.0** | 60.5** | ||||
地点Site | 118.8** | 90.4** | 91.6** | ||||
处理Treatment | 7.4* | 0 | 222.9** |
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