本田氮肥配置对空育131的干物质积累和产量的影响

The Effect of Different N-fertilizer Tactics to Dry Matter Accumulation and Yield on Kongyu 131

在其它肥量因子不变的前提下,以不同氮肥施用比例栽培的水稻空育131为材料,测定植株的生长状况、叶片总氮含量、绿色叶面积、不同部位干物重等的变化。结果表明,供试品种对不同氮肥处理的反应不同,氮肥前重施用法(前中后期氮肥比例为7︰2︰1)对空育131的群体茎数动态、叶片氮含量、叶面积、光合势、有效分蘖及地上干物重均产生促进作用,可明显提高产量构成因素中的穗数、穗粒数,而对结实率及粒重影响不大,说明在寒地条件下,水稻本田生长前期高氮条件有利于群体干物质生产与积累,并最终获得较高产量。

Using the paddy rice of Kongyu 131 as material, the effects of different tactics of N-fertilizer on dry matter accumulation and component factors of yield were studied. The result showed that the development of population with stems, N content of leaf, leaf area, the photosynthetic potential, effective tiller and dry matter on the ground were benefit from more fertilizer earlier stage. So in the end it could get higher yield.