Effects of spraying foliar silicon fertilizer on lodging resistance of japonica rice
To investigate the effect of spraying foliar silicon fertilizer application on the lodging resistance of rice stems,Ningjing 8 was selected as the material for field experiments,and 3 concentrations of foliar silicon fertilizer were set up,including 0(CK),100 and 200 mg/L.The mechanical indexes of lodging resistance,such as breaking moment M,internode configuration,and internode fullness,such as stem thickness,wall thickness and internode length,were measured.The results showed that compared with CK,the fracture moment M,section modulus Z,and bending stress BS of rice stem were increased by spraying 200 mg/L silicon fertilizer on the leaf surface.The stem diameter,inner and outer diameters of main and short axes of rice were increased.There was no significant effect on plant height,but the length between the first,second,and third segments of the base was significantly reduced.It had little effect on basal internode fullness.In conclusion,reasonable spraying of foliar silicon fertilizer can improve the mechanical strength of rice stems and the lodging resistance by increasing the stem diameter,the inner and outer diameter of the main and short axes of rice,while reducing the length between the first,second,and third nodes of the base.The effect of 200 mg/L foliar silicon fertilizer treatment is better.
japonica ricelodging resistancefoliar silicon fertilizermorphological characteristics of internodes
万方数据
维普
