燕山早丰板栗密植园施肥-产量模型研究  

Study on the Fertilization-output Model of Castanea mollissima ‘Yanshanzaofeng' in the Close Planting Garden

作　　者：郭素娟[1] 刘正民[1] 孙小兵[1] 秦天天[1] 

机构地区：[1]北京林业大学省部共建森林培育与保护教育部重点实验室,北京100083

出　　处：《核农学报》2015年第2期351-358,共8页Journal of Nuclear Agricultural Sciences

基　　金："十二五"科技支撑计划专项"北方板栗高效生产关键技术研究与示范"(2013BAD14B0402)

摘　　要：为了研究N、P、K配合施用对板栗产量的影响,以13年生盛果期的板栗主栽品种燕山早丰（Castanea mollissima‘Yanshanzaofeng’）为研究对象,采用N、P、K三因素二次饱和D-最优设计,在河北省迁西县典型板栗密植园连续两年进行田间试验。通过建立以N、P、K施肥量编码值为变量因子,产量为目标函数的三元二次数学模型,优化施肥量及N、P、K配比。结果表明N、P2O5、K2O对板栗产量有显著影响,并且两两之间存在显著交互效应。三因素对板栗产量影响的次序依次为N〉P2O5〉K2O。通过效应函数的频率分析寻优可知,单株目标产量超过4.50 kg,置信区间为95%时,N、P2O5、K2O单株优化施肥方案为：N 0.85~1.04 kg,P2O50.68~0.83 kg,K2O 0.45~0.51 kg。N、P2O5、K2O最佳施肥比例为1：0.65~0.98：0.43~0.60。该研究可为迁西板栗密植园的合理施肥提供理论依据。To study the effect of N, P, K application rate on yield of chestnut a two year field experiments were conducted on a 13a Castanea mollissima ＇ Yanshanzaofeng＇ high density planting garden in Qianxi county by using the three-factor D-saturation optimal design. A quadratic equation with three unknown was built by using N, P, K application rate as three independent variables and yield of chestnut as dependent variable. The results showed that yields were significantly influenced by the N, P205 and K20 application rate, and there were significant interactive effects between every two factors. Among the three factors, the effects of application rate of N, P2Os and K20 on yield were N 〉 P2Os 〉 K20. Frequency analysis with confidence interval 95 % indicated that the target yield could reach up 4. 50 kg per plant and, when the fertilizer rates were N 0.85 to 1.04 kg per plant, P2050. 68 to 0.83kg per plant and K20 0.45 to 0. 5 lkg per plant. The suitable fertilizer ratio of N ： P205 ： K20 was 1 ： 0.65 to 0. 98 ： 0.43 to 0.60, The study provide theoretical basis for adequate fertilization on Castanea mollissima BI. high density planting garden in Qianxi county.

关 键 词：板栗 饱和D-最优设计 施肥 密植园 

分 类 号：S664.2[农业科学—果树学]