Effects of different nitrogen amounts on yield and agronomic characters of Taoyouxiangzhan

doi:10.14088/j.cnki.issn0439-8114.2021.15.006

Abstract

Abstract: To investigate the effects of different nitrogen application rates on yield and agronomic characteristics of cultivar-Taoyouxiangzhan under the rice-crayfish co-culture, 5 nitrogen application rates 0 kg/hm²（N0）, 135 kg/hm²（N1）, 150 kg/hm²（N2）, 165 kg/hm²（N3）, 180 kg/hm²（N4） were conducted in this study. The results showed that the maximum tiller number increased by 30%, the SPAD value of leaves increased by 9.38%, and the above-ground dry matter of the spikes at heading stage and milking stage increased respectively by 37.9% and 41.1%. The effective spikes, seed setting rate and thousand-grain weight were respectively increased by 39.1%, 16.3% and 3.69%. The actual yields under the conditions of N1, N2, N3 and N4 were respectively increased by 57.8%, 54.1%, 69.2% and 61.6% compared to the control. The effect of increasing yield is best under the condition of N3, but excessive nitrogen fertilizer application reduces nitrogen fertilizer utilization rate and causes agricultural non-point source pollution. Therefore, rational application of nitrogen fertilizer is of great significance for improving rice yield and protecting the environment.

Key words: Taoyouxiangzhan, nitrogen application rate, agronomic traits, SPAD, yield

CLC Number:

S511.5

YANG Xiao-long, FANG Jian-jun, WANG Ben-fu, WANG Hong-bo, CHENG Jian-ping, ZHOU Hou-cai, ZHOU Li, XU De-ze. Effects of different nitrogen amounts on yield and agronomic characters of Taoyouxiangzhan[J]. HUBEI AGRICULTURAL SCIENCES, 2021, 60(15): 34-37.

References

[1] 杨晓龙, 程建平, 汪本福, 等. 灌浆期干旱胁迫对水稻生理性状和产量的影响[J]. 中国水稻科学, 2020, 35(1): 38-46.
[2] 侯云鹏, 杨建, 李前, 等. 施氮对水稻产量、氮素利用及土壤无机氮积累的影响[J]. 土壤通报,2016, 47(1): 118-124.
[3] ZHANG J S, TONG T Y, POTCHO P M, et al.Nitrogen effects on yield, quality and physiological characteristics of giant rice[J]. Agronomy, 2020, 10(11):1816.
[4] 刘晓霞, 潘贤, 张欢. 施肥方式及化肥用量对水稻产量和氮肥利用效率的影响[J].中国农学通报, 2020, 36(34): 1-4.
[5] 曹凑贵, 江洋, 汪金平, 等. 虾稻共作模式的“双刃剑”及可持续发展策略[J]. 中国生态农业学报, 2017, 25(9): 1245-1253.
[6] 程建平,汪本福,张枝盛,等. 湖北省稻田综合种养现状和技术创新与产业化发展思考[J]. 湖北农业科学,2017,56(22): 4217-4220.
[7] 佀国函, 袁家富, 彭成林, 等. 虾稻共作模式氮和磷循环特征及平衡状况[J]. 中国农业生态学报, 2019, 27(9): 1309-1318.
[8] 张枝盛, 汪本福, 李阳, 等. 氮肥模式对稻田温室气体排放和产量的影响[J]. 农业环境科学学报, 2020, 39(6): 1400-1408.
[9] ISLAM M R, HAQUE K M S, AKTER N, et al. Leaf chlorophyII dynamics in wheat based on SPAD meter reading and its relationship with grain yield[J]. Sci Agri, 2014, 8(1): 13-18.
[10] 周丽燕, 黄影华, 张善炫, 等. 不同施肥调控水稻分蘖数和叶面积指数的影响[J]. 湖北农业科学, 2020, 59(7): 33-37.
[11] 谭立敏, 吴昊, 李卉, 等. 不同施氮量下水稻分蘖期光合碳向土壤碳库的输入及其分配的量化研究:¹³C连续标记法[J]. 环境科学, 2014, 35(5): 1933-1988.
[12] 张满利, 陈盈, 侯守贵, 等. 氮肥运筹对水稻分蘖、干物质积累和产量的影响[J]. 辽宁农业科学, 2011(3): 6-8.
[13] 王志东, 陈宜波, 龚蓉, 等. 优质籼稻剑叶SPAD值与稻米品质相关性研究[J]. 中国水稻科学, 2021, 35(1): 89-97.
[14] GHOLIZADEH A, SABERIOON M, BORÜVKA L, et al. Leaf chlorophyll and nitrogen dynamics and their relationship to lowland rice yield for site-specific paddy management[J]. Information processing in agriculture, 2017, 4(4): 259-268.
[15] 杨海龙, 杨佳恒, 蔡金洋. 不通施氮水平下水稻叶片SPAD变化趋势及其与产量的关系[J]. 浙江农业科学, 2020, 61(11): 2200-2204.
[16] 熊栋梁. 水稻叶片结构对水力导度与光合作用的影响及其机理[D]. 武汉:华中农业大学, 2016.
[17] 赖上坤, 周三妮, 顾伟锋, 等. 二氧化碳、施氮量和移栽密度对汕优63产量形成的影响-FACE研究[J].农业环境科学学报, 2014, 33(5): 836-843.
[18] 贾冬梅. 不同施氮肥量对水稻新品种蒙松138产量影响试验研究[J]. 北方水稻, 2019, 49(4): 30-31.