Abstract:

The row interval cultivation pattern might get high yield and high efficiency by making full use of the edge advantage of crops. The effects of different transplanting densities on yield and panicle fruiting characters of rice were studied by using Liaojing 212 as material. The results showed that the yield of rice increased with the increase of transplanting density, and the yield of the same transplanting density（T2）or increasing transplanting density （T1） increased by 0.07~0.40 t/hm2 compared with the conventional cultivation treatment. But the difference between treatments was not significant. The number of tillers per hill and effective panicles per hectare were improved under the row interval cultivation pattern. Compared with CK, the seed setting rates of secondary branch in middle and basal part of rice panicle of T1 and T2 treatments were increased. Therefore, the rice yield might be improved by the row interval cultivation pattern, the climate, light conditions, planting patterns, variety characteristics and other factors should be fully considered.

Key words: row interval cultivation pattern, rice, yield, the number of spikelet, seed setting rate

摘要：

比空栽培是一种充分利用作物边行优势的栽培形式。以辽粳212为供试材料，研究了比空栽培不同移栽密度对水稻产量及穗部结实性状的影响。结果表明，比空栽培模式下，水稻产量随着移栽密度的增大而增加，与常规等行距栽培相比，相同移栽密度处理（T2）或增大移栽密度处理（T1）产量提高0.07~0.40 t/hm2，但差异不显著；比空栽培有利于提高水稻单株分蘖能力，并提高单位面积有效穗数，T1和T2处理还提高了穗中下部二次枝梗的结实率。因此，比空栽培具有提高水稻产量的潜力，但需充分考虑环境气候、光照条件以及种植模式、品种特性等因素的影响。

关键词: 比空栽培, 水稻, 产量, 颖花数, 结实率