Effects of Foliar Silicon Fertilizer Application on Stem Morphology,Mechanical Properties,Lodging Resistance and Yield of Rice in Coastal Mudflat
CHE Feiwei
CUI Shiyou
CHEN Pengjun
HAN Jijun
ZHANG Rui
Abstract：The effects of foliar silicon fertilizer application on stem morphology,mechanical properties,lodging resistance and yield of rice in tidal flat were studied.Haiyangyuan No.1(V1)and Nangeng 5055(V2)were used as experimental materials,and 12 treatments were established,including clear water(CK),mineral HA complex silicon fertilizer(T1),sugar alcohol silicon fertilizer(T2),highly active ionic liquid silicon fertilizer(T3),liquid silicon zinc fertilizer(T4),and custom-made silicon fertilizer(T5).Each treatment had two models,involving two applications during the tillering and jointing-heading stages,and three applications during the tillering,jointing-heading,and grain filling stages.The results showed that:1)Spraying silicon fertilizer can reduce rice plant height and intemode length,improve intemode roughness,stem wall thickness,and bending resistance,thereby enhancing stem lodging resistance.V1 treated with T4 and T5 has higher bending resistance and lower lodging index,while V2 treated with T3 and T5 on has stronger lodging resistance,and the effect of 3 applications was better than that of 2 applications.2)Spraying silicon fertilizer can significantly improve rice yield and its constituent factors.Compared with CK,V1 treated with twice and three times increased yield by 3.02％and 5.13％(T1),5.05％and 7.58％(T2),2.03％and 2.26％(T3),6.20％and 8.44％(T4),and 4.88％and 9.47％(T5)respectively,while V2 treated with twice and three times increased yield by 8.57％and 9.46％(T1),3.48％and 3.62％(T2),6.08％and 8.28％(T3),4.02％and 5.12％(T4),and 2.97％and 3.18％(T5)respectively.The increase in yield was mainly due to the combined number of panicles and the number of grains per panicle,among which the number of grains per panicle had a greater effect.The increase of yield was higher after three times of spraying than that after two times of spraying,mainly due to the increase in thousand grain weight and seed setting rate caused by the application of silicon fertilizer during the filling period.3)Spraying silicon fertilizer reduced rice panicle length and increased grain density,single plant yield,and biomass.V1 sprayed twice and three times with T4,resulting in the highest single plant yield,while V2 sprayed with T1 showed the highest,and the effect of spraying three times was better than twice.The harvest index of both varieties was slightly improved but did not reach a significant level.4)The effect of spraying silicon fertilizer on the primary and secondary branch traits of rice in mudflat is different with different varieties,especially the number of secondary branches,total grains and full grains.VI sprayed with T5 was better,V2 sprayed with T2 was better.In summary,there are differences in the promotion effects of different silicon fertilizers on different varieties of rice.Spraying T5 has the best effect on improving the lodging resistance of both varieties,and significantly increases the yield of Haiyangyuan No.1(V1).Nanjing 5055(V2)Sprayed with T1 has the best yield increasing effect.
Keywords：Rice in tidal flatApplication of silicon fertilizerMorphological and mechanical propertiesLodging resistanceYield
Publication Date：2024-10-28
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：14( 54-67 )