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试验旨在研究拔节期和灌浆期不同阶段灌水对晋糯3号农艺性状及产量的影响。拔节期设4个阶段,即A1(10~11片展开叶)、A2(12~13片展开叶)、A3(14~15片展开叶)、A4(16~17片展开叶);灌浆期设3个阶段,即B1(7月29日穗子中上部花期结束子粒开始灌浆)、B2(8月3日)、B3(8月8日)。研究结果表明拔节期不同阶段灌水对株高、穗长和千粒重有极显著影响(P<0.01),A2时期灌水的株高和穗长最大,千粒重在A3灌水时达到最大;灌浆期不同阶段灌水对千粒重和产量有极显著影响(P<0.01),B1时期灌水时,千粒重和产量最高;拔节期和灌浆期不同阶段灌水互作对千粒重和产量有极显著影响(P<0.01),A2B1是最优组合,即拔节期A2阶段和灌浆期B1阶段灌水可获得最大产量。
The aim of the experiment was to study the effects of irrigation on agronomic characters and yield of Jinnuo No.3 at the jointing and filling stages. In the jointing stage, four stages were set out, that is, A1 (10-11 expanded leaves), A2 (12-13 expanded leaves), A3 (14-15 expanded leaves) and A4 (16-17 expanded leaves) There are three stages, B1 (grain filling at the end of the upper flowering stage on July 29), B2 (August 3) and B3 (August 8). The results showed that irrigation at different stages of jointing had a very significant effect on plant height, spike length and 1000-grain weight (P <0.01). The plant height and spike length of irrigation at A2 were the largest, while the 1000-grain weight reached the maximum at A3 irrigation. (P <0.01). Grain weight and yield were the highest in irrigation at B1 and irrigation at the different stages of jointing and grain filling stage had significant effects on grain weight and grain yield (P <0.01). A2B1 was the most significant The optimal combination, that is, the A2 stage of jointing stage and the B1 stage of grain filling stage, can achieve the maximum yield.