甘蔗糖业Issue(2)：10-14,5.
赤红壤区氮钾肥用量对不同品系甘蔗生长的影响
Effects of Application Rate of Nitrogen and Potassium Fertilizers on Different Sugarcane Varieties at Lateritic Soils
摘要
Abstract
The optimum dosage of nitrogen and potassium fertilizer of different sugarcane varieties by different nitrogen and potassium ratio was determined. YT55, GT32 and Liucheng05-136 were selected as representatives of three strains, 4 different nitrogen and potassium ratio (low level 375 kg/hm2, high level 450 kg/hm2) were plotted to study the difference of nitrogen and potassium fertilizer on sugarcane growth, yield and nutrient uptake. The results showed that different nitrogen and potassium ratio had significant different effect to the emergence and tiller of different strains of sugarcane. performance. Low N, K level were beneficial for YT55’s production, high N, K level were beneficial for GT32’s production, high K level was beneficial for Liucheng05-136’s production, but the difference was not significant. The total nitrogen and total phosphorus content were the highest in low N, K level of sugarcane, and the difference was significant. In different N, K levels, stems of different sugarcane varieties differed in total potassium content, and the difference was significant. At strong acidity lateritic red soils, more attention should be paid to ratio of N, K for different strains of sugarcane during seedling, tillering stage to facilitate the growth of sugarcane. But in the latter part of the growth stage, N, K only had a significant effect on single stem weight and was not the main obstacle affecting production in the region. Other nutrients or soil improvement was needed to increase cane production.关键词
甘蔗/氮钾肥/赤红壤Key words
Sugarcane/Nitrogen and potassium fertilizer/Lateritic red soils分类
农业科技引用本文复制引用
邢颖,江泽普,谭裕模,廖青,陈桂芬,杨绍锷,汪羽宁,梁潘霞..赤红壤区氮钾肥用量对不同品系甘蔗生长的影响[J].甘蔗糖业,2015,(2):10-14,5.基金项目
现代农业产业技术体系建设专项资金资助(CARS-20-3-5)，广西科技攻关项目(桂科攻10100004-10) （CARS-20-3-5）
