生物炭对不同穗型粳稻物质生产和产量的影响

Effects of Biochar on Material Production and Yield of Different Panicle Japonica Rice Varieties

选择直立穗型粳稻品种北粳1号和半直立穗型粳稻品种铁粳11作为试材,研究不同生物炭施用量(7.5 t/hm^(2)和15 t/hm^(2))对不同穗型粳稻物质生产和产量的影响。结果表明:施用生物炭可以增加北粳1号和铁粳11抽穗期及成熟期的植株各器官干物质重;施用7.5 t/hm^(2)生物炭可以显著增加北粳1号的每穗总粒数和产量,分别为7.7%和6.6%,但对铁粳11的产量及其构成因素没有显著影响;施用15 t/hm^(2)生物炭时,北粳1号的每穗总粒数、结实率和产量分别提高9.8%、4.7%和11.2%,铁粳11的有效穗数、每穗总粒数和产量分别增加6.0%、6.1%和7.4%。生物炭能够促进北粳1号和铁粳11干物质积累并提高产量,但存在差异性,直立穗型品种北粳1号比半直立穗型品种铁粳11对生物炭的响应更为敏感。

The effects of different amounts of biological carbon(7.5 t/hm^(2) and 15 t/hm^(2)) on material production and yield of different panicle japonica rice were studied.The results showed that:application of biochar could increase the dry matter weight of every organ in Beijing 1 and Tiejing 11 at heading and mature stage.Application of 7.5 t/hm^(2) biochar could increase the total grain number per panicle and yield of Beijing 1 by 7.7% and 6.6%,respectively,but had no significant effect on the yield of Tiejing 11 and its components.Application of 15 t/hm^(2) biochar could increase the total grain number per panicle,seed setting rate and yield of Beijing 1 by 9.8%,4.7% and 11.2%,respectively,increase the effective panicle number,total grain number per panicle and yield of Tiejing 11 by 6.0%,6.1% and 7.4%,respectively.Biochar could promote dry matter accumulation and increase yield of Beijing 1 and Tiejing 11,but there were differences between them.The upright panicle variety Beijing 1 was more sensitive to biochar than the semi-upright panicle variety Tiejing 11.