摘要
经化验分析,2005年河西走廊主要土类速效钾平均含量为K2O 122.31 mg/kg,与1985年土壤普查时的164.83 mg/kg比较,下降了27.05%;经钾肥田间肥效试验研究得出:马铃薯、甜椒、西葫芦、番茄、黄瓜、芹菜、甜菜K2O经济效益最佳施肥量分别为239.70、299.85、296.10、225.00、428.10、119.95、355.51 kg/hm2,K2O最佳施肥量时的理论产量分别为63.45、68.38、75.52、113.53、94.67、90.17、112.48 t/hm2。作物施钾利润是:黄瓜>马铃薯>西葫芦>甜椒>芹菜>番茄>甜菜。
Testing analysis indicates that the average content of quick-acting K2O in the main soil in Hexi corridor is 122.31 mg/kg. Compare with 164.83 mg/kg at the time of the overall survey of soil in 1985, it has dropped relatively by 27.05 % ; Test of the potassium field fertilizer efficiency shows that the optimum amount of fertilization for potato, pimento, squash, tomato, cucumber, celery, beet K2O is 239.70, 299.85, 296.10, 225.00, 428.10, 119.95 and 355.51 kg/hm^2 respectively, with which the theoretic output is 63.45, 68.38, 75.52, 113.53, 94.67, 90.17, 112.48 t/hm^2 respectively. The profit of potassium application for different crops is： cucumber 〉 potato 〉 squash 〉 pimento 〉 celery 〉 tomato 〉 beet.
出处
《干旱地区农业研究》
CSCD
北大核心
2008年第1期37-41,共5页
Agricultural Research in the Arid Areas
基金
河西学院重点科研资助项目(02-A2)
关键词
河西走廊
钾肥
适宜用量
Hexi corridor
potassium
suitable application
