摘要
在旱农区农田生态条件下 ,采用常规与二次回归结合的设计方法 ,多点同步研究影响地膜蚕豆高产与品种、密度及氮磷钾施用量配比间的关系和相关效应 ,并在试验基础上同时进行生产示范验证。根据试验示范结果 ,选用相应分析程序进行计算机模拟寻优 ,得到地膜蚕豆每公顷产量高于 4 50 0 kg,纯收益大于 1 50 0元的技术方案 2 3套。该方案 95%置信域 :选择良种加拿大 32 1 ,每公顷保苗 2 1万株 ,施优质农肥 6万 kg,化肥纯 N 49.3 kg～ 70 .7kg,P2 O5 1 55.7kg～ 2 0 0 .7kg,K2 O 65.7kg～ 86.8kg;优化施肥的中心组合是 :每公顷施优质农肥 60 0 0 0 kg,化肥纯 N 60 kg,P2 O5 1 78.2 kg,K2 O 76.3 kg;N,P2 O5 ,K2 O的比约为1∶ 2 .97∶ 1 .2
Under the agro ecological circumstances in dryland farming areas in middle Gansu Province,the design method combining the routine with the binary regression was used to research into the relationship among and interrelated effect on high yield of mulched broad bean and varieties, density and the applied volume ratio among N,P and K.Meanwhile, production demonotration verifying the experiment achievements was available. On the basis of demonstration achievements, relevant analysis program was selected to simulate on computer. As a result, 23 sets of technology plan were found, through which the yield was over 4 500 kg/hm 2 and the net income was over 1 500 yuan/hm 2 , the 95% relibility range of the plan was that Canada 321 was celected as an improved variety; 210 000 seedlings/hm 2 were kept;High quality manure application volume was 60 000 kg/hm 2 ;Pure N 49.3 kg/hm 2 ~70.7 kg/hm 2 ;P 2 O 5 155.7 kg/hm 2 ~200.7 kg/hm 2 ;K 2 O65.7 kg/hm 2 ~86.8 kg/hm 2 ; The centre integ ration of the fertilizer was that high quality manure application volume was 60 000 kg/hm 2 ;Pure N 60 kg/hm 2 ;P 2 O 5 178.2 kg/hm 2 ;K 2 O 76.3 kg/hm 2 ; The ratio of N,P 2 O 5 and K 2 O was 1∶ 2.97 ∶ 1.27.
出处
《干旱地区农业研究》
CSCD
北大核心
2000年第2期40-46,共7页
Agricultural Research in the Arid Areas
基金
甘肃省定西地区"九五"科技重点攻关项目部分内容
关键词
蚕豆
地膜覆盖
栽培
旱作农业区
施肥
产量
mulched broad beans
film mulching cultivation
dryland farming areas
