缓释复混肥不同运筹方式对宜香优2115产量及抗倒伏性的影响

以杂交籼稻宜香优2115为试验材料,设置4种缓释复混肥运筹处理,研究缓释复混肥不同运筹方式对杂交籼稻宜香优2115产量、茎秆生长特性及其抗倒伏性的影响。结果表明：与对照处理F5相比,4种缓释复混肥运筹处理产量均显著提高,具体产量结果表现为F3>F1>F4>F2>F5;茎秆基部L1-L3节间长度以F1处理最高,L4-L6节间长度以F4处理最高,穗长表现为F3>F1>F4>F2>F5,株高表现为F4>F1>F2>F3>F5;F1和F2处理的节间粗度、茎壁厚度和抗折力均高于F3和F4处理,弯曲力矩和倒伏指数较F3和F4处理均有所降低。综合考虑产量与抗倒伏能力,缓释复混肥一次性基施处理能保证宜香优2115产量达到9500kg/hm2以上,同时具有较高抗倒伏能力,实现了稳产、高抗倒伏的目的。

Effects of different operation methods of slow release compound fertilizer on the yield and lodging resistance of Yixiangyou 2115

Taking the hybrid indica rice Yixiangyou 2115 as the experimental material, four kinds of slow release compound fertilizer operations were set up to study the effects of different operations of slow-release compound fertilizer on the yield, stem growth characteristics and lodging resistance of the hybrid indica rice Yixiangyou 2115. The results showed that compared with the control treatment F5, the yields of the four slow-release compound fertilizers were significantly increased, and the specific yield results were F3>F1>F4>F2>F5; The internode length of L1-L3 at the stem base was the highest in F1 treatment, and the internode length of l4-l6 was the highest in F4 treatment. The spike length was F3>F1>F4>F2>F5, and the plant height was F4>F1>F2>F3>F5; The internode diameter, stem wall thickness and bending resistance of F1 and F2 treatments were higher than those of F3 and F4 treatments, and the bending moment and lodging index were lower than those of F3 and F4 treatments. Considering the yield and lodging resistance comprehensively, the one-time basic application of slow-release compound fertilizer can ensure the yield of Yixiangyou 2115 to reach more than 9500kg/hm2, and has high lodging resistance, realizing the purpose of stable yield and high lodging resistance.