优质早籼品种佳辐占的生物学特性与高产栽培技术研究

Biological characteristic of early high-quality rice Jiafuzhan and its high-yield cultivation techniques

多年试验研究结果表明,佳辐占品质优、单产较高、中抗稻瘟病、苗期较耐寒、穗期耐高温性中等。相 关、通径分析结果表明,佳辐占4个产量构成因素中,单位面积有效穗对产量影响最大,高产栽培关键是主攻有 效穗。高产栽培正交试验结果表明,插植规格16.7～20.0 cm×20.0 cm,施N 210 kg·hm-2,且N、P、K和有 机肥配合使用,能获得较高产量。

The results of regional trials by several years showed that Jiafuzhan had high quality, high yield, moderately resistant to rice blast, high cold tolerance at seedling stage and moderate heat tolerance at heading stage. The analysis of correlation and path showed that in four yield components of Jiafuzhan, the effective panicle per area was the key factor to effect the yield. Cultivation strategy for high yield should be taken to accelerate tiller to ensure enough effective panicle per area. And the results of orthogonal test for high yield showed that seedling density with 16. 7-20.0 cm×20.0 cm, N 210 kg·hm-2, fertilizer application with N, P, K and organic manure could gain high yield.