摘要
在薄赤砂土上对甘薯进行3414肥效试验,结果表明:对甘薯产量影响最大的是N,P影响最小;通过建立的模拟方程得出每667 m2最佳施肥量为N 14.36 kg、P2O52.64 kg、K2O 16.21kg,N∶P2O5∶K2O为1∶0.2∶1.13,甘薯的最佳经济效益产量为1 563 kg。
A 3414 fertilizer efficiency experiment on sweet potato was carried out in thin layer of red sandy soil.The results showed that N exerted the greatest effect on sweet potato yield,and the minimal effect was P.Calculated with the established simulation equation,the optimum amount of fertilization per 667 m2 was as follows,N 14.36 kg（215.40 kg/hm2）,P2O5 2.64 kg（39.60 kg/hm2）,K2O 16.21 kg（243.15 kg/hm2）,the ratio of N∶P2O5∶K2O was 1∶0.2∶1.13,and the optimum economic yield was 1 563 kg（23 445 kg/hm2）.
出处
《福建农业科技》
2012年第6期66-68,共3页
Fujian Agricultural Science and Technology
关键词
甘薯
3414试验
肥料效应
Sweet potato
3414 test
fertilizer efficiency
