南方农业学报2017，Vol.48Issue(2)：252-258,7.DOI:10.3969/j:issn.2095-1191.2017.02.252
施氮方式和灌水量对甘蔗农艺性状、 养分累积及产量的影响
Effects of different nitrogen application methods and irrigation amounts on agronomic characters,nutrient accumulation and yield of sugarcane
摘要
Abstract
[Objective]The present study revealed the effects of different nitrogen application methods and irrigation amounts on agronomic characters,nutrient accumulation and yield of sugarcane, in order to provide reference for achieving high-yield and high-efficiency sugarcane cultivation through fertilizer resources. [Method]With ROC22 as test material, seven different treatments were conducted:no nitrogen and no water (CK), nitrogen as base fertilizer for one time, irrigation amount 750 mm(T1), nitrogen as base fertilizer for one time, irrigation amount 1000 mm(T2), nitrogen as base fertilizer for one time, irrigation amount 1250 mm(T3), nitrogen application for three times(base fertilizer 30%, nitrogen at tillering stage 30%and nitrogen at elongating stage 40%), irrigation amount 750 mm(T4), nitrogen application for three times, ir-rigation amount 1000 mm(T5), nitrogen application for three times, irrigation amount 1250 mm(T6). Agronomic characters, nutrient contents in different organs,yield and sugarcane juice brix were measured to study the effects of different nitrogen application methods and irrigation amounts on sugarcane growth and yield. [Result]In medium and large irrigation amounts treatments(1000 and 1250 mm, the same below), the plant heights of sugarcanes in three-time nitrogen applications treat-ments was higher than those in one-time nitrogen application , and the difference was significant between May to July (P<0.05). At maturity stage,dry weight of stalk was T1>T2>T3,T6>T4>T5,T1>T4,T2>T5,T3<T6,dry weight of leaf was T1<T4, T2<T5,T3<T6,and dry weight of sheath was T1>T4,T2>T5,T3<T6. Total dry matter accumulation was T1>T2>T3,T6>T4>T5,T1>T4,T2>T5,T3<T6,and net accumulation of dry matter was T3>T1>T2,T4>T6>T5,T1<T4,T2<T5,T3<T6. At maturity stage, nitrogen accumulations in stalk and leaf of sugarcanes in three-time nitrogen applications were higher than those in one-time nitrogen application. Sugarcane yield turned out to be the highest with large irrigation amount in both one-time nitrogen application and three-time nitrogen applications treatments, and the yields was 104.68 and 97.09 t/ha respectively. In medium and high irrigation amounts treatments, sugarcane yield was higher when nitrogen was applied for one time. In both one-time and three-time nitrogen applications, sugarcane juice brix in large irrigation amount treatment was lower. When irrigation amount was the same, sugarcane juice brix in one-time nitrogen application was higher than three-time ni-trogen applications. [Conclusion]Large irrigation amount and one-time nitrogen application as base fertilizer can increase sugarcane yield and maintain the quality.关键词
甘蔗/施氮方式/灌水量/农艺性状/养分累积/产量Key words
sugarcane/nitrogen application method/irrigation amount/agronomic characters/nutrient accumulation/yield分类
农业科技引用本文复制引用
刘亚男,马海洋,冼皑敏,王琚钢,陈菁,石伟琦..施氮方式和灌水量对甘蔗农艺性状、 养分累积及产量的影响[J].南方农业学报,2017,48(2):252-258,7.基金项目
国家科技支撑计划项目(2014BAD16B06) （2014BAD16B06）
中国热带农业科学院南亚热带作物研究所基本科研业务费专项项目(1630062014014) （1630062014014）
