特优559高产栽培技术初探

Preliminary Studies on High-yield Cultural Techniques of Teyou 559

通过对特优５５９的播期试验、长秧龄密度试验、肥料运筹密度试验以及对大面积生产示范高产田块的调查，初步摸索出特优５５９的高产栽培技术。

The effects of seeding time and the transplanting density under the conditions of long seedling age and different fertilizing methods on yield components and grain yield of Teyou 559 were analyzed. The results showed that the seed set increased with seeding date advanced; the grain yield increased with transplanting density properly increased on conditions of long seedling age; and there existed an interaction between density and fertilizing methods in seed set and grain yield, but no interaction in 1 000-grain weight. The seed set and grain yield of Teyou 559 were highest when the ratio of tillering fertilizer to panicle fertilizer was 1∶1 with the planting density at 300 000 hills/hm 2; but when the ratio of tillering fertilizer to panicle fertilizer was 1∶3 with the planting density at 225 000 hills/hm 2, the 1 000-grain weight was highest. The investigation on the yield construction of high-yield plots indicated that to obtain a high yield of 9.75 t/hm 2 , the planting density should be at 240 000～270 000 hills/hm 2, the transplanted basic seedlings at 975 000～1 275 000 /hm 2, effective panicles at 2 325 000～2 625 000 /hm 2, spikelets per panicle at 160～180, the seed set at about 90% and the 1 000-grain weight at 27～28 g.