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在施纯氮300 kg/hm2、基蘖肥∶穗肥=6∶4的条件下,以杂交中粳稻徐优403、Ⅲ优98为试验材料,研究不同叶龄期等量追施穗肥对其产量、物质生产及品质的影响。结果表明:叶龄余数4、2时等量追肥产量最高(徐优403、Ⅲ优98分别为10 059.0、10 750.5 kg/hm2),显著高于叶龄余数5、3和3、1时等量追肥的处理;叶龄余数4、2时等量追肥能够有效地增加抽穗—成熟期干物质的积累,最终获得较高的生物学产量;适当推迟追施穗肥可有效改善杂交中粳稻稻米的加工品质、外观品质、营养及蒸煮品质。
Under the condition of applying pure nitrogen 300 kg / hm2, basal tillering fertilizer: panicle fertilizer = 6: 4, the hybrid mid-japonica hybrids Xuyou 403 and Ⅲ You 98 were used to study the effects of topdressing panicles Its production, material production and quality impact. The results showed that the topdressing rate of topdressing was the highest at 4 and 2 leaf age (Xuyou 403 and Ⅲyou 98 were 10 059.0 and 10 750.5 kg / hm 2, respectively), which were significantly higher than those of leaf age at 5, 3 and 3,1 Amount of topdressing treatment; leaf age remainder 4,2 o’clock the same amount of topdressing can effectively increase the heading - the maturity of dry matter accumulation, and ultimately get higher biological yield; Appropriate postponed topdressing panicle can effectively improve the hybrid japonica rice The processing quality, appearance quality, nutrition and cooking quality.