摘要
为了给水稻高蛋白、高产栽培提供理论依据,采用田间小区试验,研究了不同氮、磷、钾配比及氮用量对水稻光合特性、养分吸收、产量的影响.结果表明,推荐配比(N,P2O5,K2O的质量比为206.3︰105︰180)和氮低量配比(N,P2O5,K2O的质量比为186.3︰105︰180)两处理能显著提高水稻乳熟前、后期功能叶净光合速率,促进叶肉细胞的羧化效率,提高CO2的同化速率,促进水稻对氮、磷、钾的吸收,早、晚稻产量高低依次均为推荐配比处理、氮低量配比处理、氮高量配比处理.和对照相比,早稻增产幅度为8.2%～12.0%,晚稻增产幅度为3.7%～12.1%.
In this paper the effects of applied different ratio of N,P,K fertilizer and different amount of N fertilizer on photosynthesis character,absorption of nutrient and yield of rice are investigated by field experiment which served as the theoretical basis for rice high contents of protein and high yield cultivation.The results show that, under the treatment of both recommend ratio and low amount N fertilizer ratio,the net photosynthesis rate of functional leaves of rice in early milk and latter milk stage are increased deeply,the carboxyl rate of succulence cell in leaves are enhanced,the assimilate rate of carbon dioxide are improved,and the ability of absorb nutrient are strengthened.Same result happens to the early and latter rice.The recommended ratio treatment has the best effects,the low amount N fertilize ratio treatment takes the second place and the high amount N fertilize ratio treatment the third.The yield increase stage of early rice is 8.2%～12.0%,of later rice is 3.7%～12.1% compared with CK.
出处
《湖南农业大学学报（自然科学版）》
CAS
CSCD
北大核心
2004年第2期123-127,共5页
Journal of Hunan Agricultural University(Natural Sciences)
基金
国家"十五"攻关项目 (2001BA507A)
关键词
水稻
养分配比
氮用量
产量
rice
ratio of nutrients
amount of N fertilizer
yield
