期刊论文

Effects of nitrogen and sulfur fertilizer combinations on the yield and nitrogen use efficiency of ‘Wuchangxiangdao'

中文

湖南农业大学学报(自然科学版)

1007-1032

2020

46

2

125-129,183

10.13331/j.cnki.jhau.2020.02.001

31471446:国家自然科学基金 30971724:国家自然科学基金

本校为第一机构

以稻花香2号为材料,设置3个氮(N)水平N_1 (0 kg/hm~2)、N_2 (90 kg/hm~2)、N_3(180 kg/hm~2)和3个硫(S)水平S_1(0 kg/hm~2)、S_2(45 kg/hm~2)、S_3(90 kg/hm~2),配制9个氮硫互作组合,进行完全随机试验,研究不同施肥处理对五常香稻产量构成及氮肥利用率的影响。结果表明:增施氮肥可显著提高有效穗数和每穗总粒数;增施硫肥可显著提高结实率和千粒质量;9个氮硫互作处理中,N_2S_2的实际产量(7 583 kg/hm~2)最高,较N_1S_1增产56.3%,氮肥利用率为60.0 kg/kg;低氮高硫的N_2S_3和高氮低硫的N_3S_2均浪费氮肥,增加水稻生产成本,增加环境污染风险。综合分析,90 kg/hm~2施氮量和45 kg/hm~2施硫量是五常香稻...

In order to find the best nitrogen(N) and sulfur(S) fertilizer combinations to increase the yield of Wuchangxiangdao and improve the nitrogen use efficiency, the aromatic rice named Daohuaxiang 2 was selected, and 9 nitrogen and sulfur fertilizer combinations,N_1S_1, N_1S_2, N_1S_3, N_2S_1, N_2S_2, N_2S_3, N_3S_1, N_3S_2, N_3S_3, were selected as 9 treatments. These treatment were grouped to 3 levels of nitrogen as N_1 (0 kg/hm~2), N_2 (90 kg/hm~2), N_3(180 kg/hm~2) and 3 levels of sulfur as S_1(0 kg/hm~2), S_2(45 kg/hm~2), S_3(90 kg/hm~2) by c...