关键词: 高产栽培, 籼稻良种, 产量组分, 最适有效穗, 作物育种[49DD], 栽培[49EA]

Abstract: In 1987-1995, the yield components of indica rice varieties under high yirld cultivation condition were studied with 17 rice varieties. The results were shown as follows: 1. The way of high yield breading was through increasing productive panicles and 1000-grain weight; 2. There was a significant negative correlation between panicles and spikelets panicle. Even small panicles may gct high yield pass thtough reasonable cultivation techniques. Large panicle is not the main goal of high yield breading; 3. 1000-grain weight have a good stability. But there was a significant differeace in 1000 grain weight among varieties; 4. Seed seeting was affected by environment conditions, but seed seeting was relativelg stable among rice varieties.

Key words: HIGH YIELD CULTIVATION, INDICA RICE VARIETIES, YIELD COMPONENT, SUITABLE PANICOLES, CROP BREEDING, CROPPING