以20个杂交中稻组合为材料,在前氮后移与重底早追两种施氮方式下,研究了前氮后移对头季稻及再生稻产量的影响。结果表明,前氮后移有助于提高杂交中稻组合头季稻及再生稻产量,且高于重底早追施氮方式,但各杂交组合间表现各异。其中,内5优306、蓉18优447、德香4103、内5优317 和川谷优7329这5个组合前氮后移处理头季稻比重底早追处理显著或极显著增产,乐优198、宜香优800、蓉优1808、冈比优99、冈优725、德香4103、炳优900、F优498、内5优317这9个组合的再生稻产量前氮后移处理比重底早追处理高。综合考虑头季稻产量和再生力,两季总产较高的组合为宜香优800、内5优317和蓉18优447。
刘明星1, 张林2, 范青华1, 熊洪2, 周兴兵2, 朱永川2, 蒋 鹏2, 刘茂2, 郭晓艺2, 徐富贤2*
. 前氮后移对杂交中稻及其再生稻产量的影响[J]. 中国稻米, 2014
, 20(4)
: 48
-50
.
DOI: 10.3969/j.issn.1006-8082.2014.04.011
Effects of shift part of nitrogen fertilizer from basal-tillering to panicle initiation on grain yield of mid-season hybrid rice and ratoon rice were investigated with 20 rice combinations in two nitrogen application strategies. The results showed that the average grain yield of 20 hybrid rice combinations was higher than that of traditional fertilizing method. There were 5 combinations’ grain yield of main crop rice and 9 combinations’ grain yield of ratoon rice higher than traditional fertilizing method. Considered to the total yield of main crop rice and ratoon rice, there were 3 combinations’ grain yield significant higher than traditional fertilizing method.
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