杂交水稻不同栽植方式干物质积累与分配研究

STUDY ON EFFECT OF DIFFERENT PLANTING METHOD TO THE ACCUMULATION AND DISTRIBUTION OF DRY MATTER IN HYBRID RICE

对杂交水稻不同栽植方式干物质积累与分配研究表明:垄作、宽窄行厢作在生育过程中干物质积累强度明显高于宽窄行平作,分别达10.92公斤/亩·日和10.7公斤/亩·日,而宽窄行平作和宽行密窝平作又明显高于等行窝距(对照),分别为10.06公斤/亩·日和9.96公斤/亩·日;对照只有8.7公斤/亩·日。各器官向穗部运转的干物质垄作为583.63公斤/亩;宽窄行厢作为561.28公斤/亩;宽窄行平作为525.09公斤/亩;宽行密窝为527.83公斤/亩;对照为473.2公斤/亩。经方差分析:垄作极显著高于宽窄行平作、宽行密窝和对照;宽窄行厢作显著高于宽窄行平作、宽行密窝和极显著高于对照;宽窄行平作和宽行密窝也极显著高于对照。

Accumulation and distribution of dry matter from different planting methods of hybrid rice was analysed. The results were as follows. (1) During the growth and development period: the amount of dry matter accumulated in the ridge culture or wide and narrow rows interblocking was significantly higher than that of wide and narrow rows level-planting reaching an accumulation intensity of dry matter by 10.92kg/mu.day and 10.7kg/mu.day respectively. But wide and narrow rows level-planting or wide row and close pitlevel-planting getting by 10.06kg/mu.day and 9.9kg/mu.day was significantly better than the check treatment (equal distance of row and pit) getting by S.7kg/mu.day. (2) The amount of dry matter transported to the spikes in the ridge culture, wide and narrow rows interblocking, wide and narrow rows level-planting, wide row-close pit and the check were 583.63kg/mu, E27.09kg/mu, 527.83kg/mu and 473.2kg/mu respectively .Variance analysis showed that the ridge culture was significantly better than wide and narrow rows level-planting, wide and narrow rows Interblocking was significantly better than wide and narrow rows level-planting. Wide row and close pit was significantly better than control. Wide row and close pit and wide and narrow rows level-planting was significantly better than control.