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对高原优质杂交粳稻滇杂32进行高产栽培研究,实收产量14·902t/hm2。攻关田分蘖成穗的分析结果表明:滇杂32高产需要较多的有效穗(469·7万/hm2)和较高成穗率(83·30%);分蘖成穗的经济产量是构成产量的主体,占88·86%,又以1、2次分蘖成穗所占比例较大,分别占33·32%和42·96%;单株经济产量与单株有效穗数(0·9552**)呈极显著正相关,与穗粒数(0·3406*)、穗实粒数(0·3512*)呈显著正相关。提出了滇杂32高产栽培的重点是促进低节位分蘖发生和成穗;协调好个体与群体的关系,从而获取最大群体效益。
High-yielding cultivation was conducted on the high-quality and high-quality japonica hybrid rice Dianza 32 with a yield of 14.902 t / hm2. The results of tillering test on Guandian showed that the high yield of Dianza 32 needed more effective spike (4.697 million / hm2) and higher spike rate (83.30%). The economic yield of tillering to spike was the result of yield Accounting for 88.86% of the total, accounting for 33.32% and 42.96% of the total, respectively. The economic yield per plant and the effective panicle per plant (0.9552 **) was significantly and positively correlated with grain number per spike (0 · 3406 *), grain number per spike (0 · 3512 *). It is put forward that the key point of Dianza 32 high-yielding cultivation is to promote low-node tillering and spike formation; to coordinate the relationship between individuals and groups so as to obtain the maximum group benefit.