摘要
采用 5因素 2次正交旋转组合设计 ,以黄粉虫幼虫饲养过程中饲养温度 ( X1)、相对湿度 ( X2 )、虫粪筛除频率 ( X3)、饲养密度 ( X4 )以及饲料含水量 ( X5) 5因素为参试因素 ,考查它们对黄粉虫高龄幼虫的生长及存活的影响 ,建立并进行了简化得到了以黄粉虫幼虫增重率及死亡率为目标函数的回归模型 :Y增 =1 2 7.5 0 79+ 1 8.65 5 9x5+ 2 .7894x3x4 - 2 .385 4 x3x5- 3.0 5 94x21+ 1 .82 4 1 x23- 3.85 5 9x25;Y死 =1 .745 9+0 .41 0 8x1+ 0 .0 975 x2 + 0 .90 2 5 x4 + 0 .3442 x5+ 0 .0 834x21+ 0 .30 60 x24 - 0 .2 62 3x25。分析结果表明 :影响黄粉虫幼虫生长后期增重及死亡的主要因素分别为饲料含水量和饲养密度 ;饲料含水量和温度对黄粉虫增重有着重要的影响 ,饲养密度、温度、饲料含水量对黄粉虫的死亡有着重要的影响 ,其影响均达 1 %或 5 %显著水平 ;推荐的饲养条件为 :温度 2 4～ 2 7℃、相对湿度 64%～ 70 %、筛粪频率 2～ 4d/次、饲养密度 0 .42～0 .49g/cm2 、饲料含水量 1 3.48%～ 1 7.48%。
This paper studied about the effects of five ecological factors: rear ing temperature(x 1), relative air moisture(x 2), rate of feces siftin g(x 3), density of larvae(x 4) and fodder water percentage(x 5) o n growth speed and survival rate of older mealworm (Tenebrio molitor L.) la rvae through rotational composite design of quadratic regression. Two models wer e established to describe the effects of the five factors: Y g=127.5079＋18 .6559x 5＋2.7894x 3x 4－2.3854x 3x 5－3.0594x２ 1＋1.8241x２ 3 －3.8559x２ 5;Y d=1.7459＋0.4108x 1＋0.0975x 2＋0.9025x 4＋0.3442x 5＋0.0834x２ 1＋0.3060x２ 4－0.2623x２ 5.The models showed that percentage of fodder water is the major factor affecting the growing speed of T. molitor larvae, and rearing temperature and density of larvae and fodder water are the major factors on deat h rate. The models also show that temperature and fodder have important effects on growth speed and death rate, and significance tests showed they have signific ant difference both the 0.05 and 0.01 levels. The optimal rearing conditions a re temperature of 24～27℃, relative air moisture of 64%～70%, feces sifting rate of once in 2～4 days, density of larvae of 0.42～0.49 g/cm2 and fodder moistur e of 13.48%～17.48%.
出处
《生态学报》
CAS
CSCD
北大核心
2003年第4期673-680,共8页
Acta Ecologica Sinica
基金
四川省林业厅重点科技资助项目 ( 98-1 1 9)~~
