摘要
[目的]研究水稻全程深施肥方法的可行性。[方法]以超级稻东农423为试验材料,设全程深施肥、全层施肥和无肥3个处理,研究不同处理土壤耕层中氮的存在部位及其速效氮含量。[结果]全程深施肥方法具有可行性,能够将肥料施达预定部位,达到促使水稻前期平稳生长、后期优势生长的目的;各处理的产量间差异均达极显著水平,并呈现全程深施>全层施>无肥的趋势;全程深施肥能够提高水稻的产量、穗数和每穗粒数,但降低了结实率和千粒重。[结论]研究结果为水稻优质高产的深层施肥提供了理论与技术依据。
[Objective] The aim was to study the feasibility of deep-layer application of fertilizer in the whole growth period（DAF） of rice.[Method] By using a super-high yield rice variety Dongnong 423 as material,three kinds of fertilizer application methods were studied based upon the investigation on existing position and corresponding content of available N-fertilizer in the cultivated soil.The three fertilization methods were deep application in the whole growth period（DAF）,incorporating into all soil layers（IAF） and no fertilization（NF） [Result] The DAF treatment was feasible,and it enabled the N-fertilizer applied to reach the expected position,contributing to the growth of rice at the primary stage smoothly and the growth of rice at the late stage predominately.There were significant differences（P0.01） in grain yield（DAFIAFNF）.Under DAF treatment,the grain yield,number of panicles,number of grains per panicle increased,however,the seed setting rate,1 000-grain weight of rice decreased compared with the other two treatments.[Conclusion] The study will provide theoretical and technical basis for super-high yield rice deep-layer fertilizer application.
出处
《安徽农业科学》
CAS
2012年第12期7029-7031,共3页
Journal of Anhui Agricultural Sciences
关键词
水稻
全程深施肥
施肥
产量
Rice
Deep-layer fertilizer application in the whole growth period
Fertilizer application
Yield
