摘要
为探寻高产高效的龙须草施肥方案,采用氮、磷、钾肥三因素通用旋转组合设计,通过计算机模拟寻优,建立了湘西耕型红色石灰土龙须草栽培中施肥量与产量、施肥量与利润的数学模型,并优选出龙须草产量和利润最高的各10套施肥方案.龙须草最高产量的施肥量为:尿素253.7kghm2,过磷酸钙170.4kghm2,氯化钾100.5kghm2,N,P2O5,K2O的施用量比例为1∶0.18∶0.52;龙须草最佳经济效益施肥量为:尿素246.2kghm2,过磷酸钙191.4kghm2,氯化钾100.5kghm2,N,P2O5,K2O的施用量比例为1∶0.20∶0.53.
To devise a fumula which helps to promote the output of Eulalivpsis binata and the efficiency of fertilization,mathematical models of recommended fertilization of nitrogen,phosphorus and potassium for Eulalivpsis binata in cultivated red lime stone soil were set up by means of universal rotational combinatorial design and computer simulation optimizing.10 fertilization schemes bringing maximum production of eulalivpsis binata and profit were selected separately. The fertilization amounts for maximum production are 253.7 kg/hm 2 of urea,170.4 kg/hm 2 of superphosphate and 100.5kg/hm 2ofpotassiumchloride,andN∶P 2O 5∶K 2O=1∶0.18∶0.52. The fertilization amounts for maximum profitfrom eulalivpsis binata production are 246.2 kg/hm 2 of urea,191.4 kg/hm 2 of superphosphate and 100.5 kg/hm 2 of potassium chloride, and N∶P 2O 5∶K 2O=1∶0.20∶0.53.
出处
《湖南农业大学学报（自然科学版）》
CAS
CSCD
1999年第6期464-468,共5页
Journal of Hunan Agricultural University(Natural Sciences)
基金
湖南省科委资助!( 97JKY2 0 0 8)
关键词
龙须草
配方施肥
数学模型
耕型红色石灰土
recommended fertilization mathematical models cultivated red limestone soil Eulalivpsis binata
