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为探讨贵州不同生态区杂交水稻组合江优919施肥技术,采用2因子随机区组设计在贵州2个重点生态区进行了不同施氮量和穗肥比例试验。结果表明,2生态区江优919产量差异明显,实现高产的施肥方案也不同,要根据不同生态区条件确定不同的施肥方案。类似平塘试点生态条件的稻区江优919采用总尿素量为358.65 kg/hm~2、基蘖肥与穗肥比为4∶1的施肥方案单产可达10.95 t/hm~2以上;类似沿河试点生态条件的稻区江优919采用总尿素量为423.90 kg/hm~2、基蘖肥与穗肥比为7∶3的施肥方案单产可达到9.75 t/hm~2以上。
In order to explore the fertilization technology of hybrid rice combination “Jiangyou 919” in different ecological regions of Guizhou Province, two nitrogen fertilization and panicle fertilization experiments were conducted in two key ecoregions of Guizhou using 2-factor randomized block design. The results showed that the yield of Jiangyou 919 in the ecologic area was obviously different, and the plan of high yield fertilization was also different. Different fertilization schemes should be determined according to the conditions of different ecological zones. Similar to Pingtang experimental ecological conditions in rice Jiangyou 919 using a total urea amount of 358.65 kg / hm ~ 2, the ratio of base tillering to panicle fertilizer ratio of 4: 1 yield of up to 10.95 t / hm ~ 2; similar The yield of total urea was 423.90 kg / hm ~ 2 in the rice area Jiangyou 919 along the river, and the yield was 975 t / hm ~ 2 when the ratio of base tillering fertilizer to panicle fertilizer was 7: 3.