摘要
应用Richards模型研究了不同氮肥水平对水稻籽粒灌浆特性的影响,结果表明,不同处理的强、弱势粒灌浆特征均符合Richards模型;不同氮肥用量不仅影响籽粒灌浆的起始势、灌浆速率和灌浆时间等灌浆特征参数的大小,而且还影响强弱势粒之间灌浆特征参数的差异。强势粒生长终值量N120>N60>N90>N30>N0,弱势粒生长终值量N0>N120>N90>N60>N30;弱势粒灌浆时间均比相应的强势粒拉得长,无论强弱势粒,灌浆前期和盛期都占据灌浆过程的绝大部分时间,且各处理之间差异不明显。
The effects of different nitrogen application rates on grain-filling properties of rice were studied with Richards＇s growth model in this paper. The results were as followed： Superior and inferior grain filling of rice were all accordance with Richards Equation. Different nitrogen application rates not only havd effects on the grain-filling parameters, but also on the difference of grain-filling parameters between superior and inferior grain. Final value of superior grain was as followed： N120〉N60〉N90〉 N30〉N0, and final value of inferior grain was N0〉N120〉N90〉N60〉N30. Filling period of IG was longer than one of SG. Whatever SG or IG, former and medium term occupied most of the time of filling.
出处
《黑龙江八一农垦大学学报》
2007年第2期8-12,共5页
journal of heilongjiang bayi agricultural university
基金
国家科技攻关计划"食品安全关键技术应用的综合示范"子课题(GB04G109-06)
教育部科技攻关项目"以微生态技术建立种养殖示范工程"(JcoIBS09)。
关键词
氮肥水平
水稻
灌浆特性
different nitrogen application rates
rice
grain-filling properties
