摘要
采用3因素2次D-饱和最优设计,通过大田试验建立氮、磷、钾施肥量与梨枣产量和品质综合评分的效应函数。结果表明,氮、磷、钾肥对梨枣产量的作用顺序为:钾肥>磷肥>氮肥;氮、磷、钾肥对梨枣品质的作用顺序为:钾肥>氮肥>磷肥。采用频率分析法对各效应函数进行寻优结果表明:梨枣目标产量在23000～27000kg·hm-2,95%置信区间的优化施肥量为N2 72～499kg·hm-2、P2O5 204～297kg·hm-2、K2O 243～323kg·hm-2;梨枣品质综合评分在85分以上,95%置信区间的优化施肥量为N 407～737kg·hm-2、P2O5 158～306kg·hm-2、K2O 285～376kg·hm-2;梨枣高产优质的最优施肥量为N 407～499kg·hm-2、P2O5 204～297kg·hm-2、K2O 285～323kg·hm-2。
A field experiment with three factors D-saturated optimal design was carried out to investigate the effect of nitrogen, phosphorus and potassium fertilizer on yield and quality of pear-jujube （Ziziphus jujuba cv. Lizao）trees in loess hilly region. The results showed that： fertilizer efficiency of N, P, K on the pear-jujube yield was： K P N; but on the improved quality was： KNP. The frequency analysis showed that if the expected pear-jujube yield is 23 000-27 000 kg·hm-2, the optimal fertilizer rate is needed to be 272-499 kg·hm-2 of N, 204-297 kg·hm-2 of P2O5, and 243-323 kg·hm-2 of K2O; if the expected quality average value is 85, the optimal fertilizer rate is 407-737 kg·hm-2 of N, 158-306 kg·hm-2 of P2O5, and 285-376 kg·hm-2 of K2O. Consequently, the optimal fertilizer application rates for both high yield and high quality are 407-499 kg·hm-2 of N, 204-297 kg·hm-2 of P2O5, and 286-323 kg·hm-2 K2O.
出处
《林业科学》
EI
CAS
CSCD
北大核心
2013年第2期21-26,共6页
Scientia Silvae Sinicae
基金
"十二五"国家科技支撑计划(2011BAD29B04)
陕西省科技创新工程(2011KTCL02-02)
关键词
梨枣
产量
品质
最优施肥模式
Ziziphus jujuba cv. Lizao
yield
quality
optimal fertilization model
