production trait

Take pulpwood production as the breeding goal, the comparison of several multiple trait index selections showed that the index should be incorporating bole biomass and basic density and placing more emphasis upon biomass is more ideal.

以纸浆材为选择目的进行家系指数选择，认为包含产量（干材干重）和质量（木材基本密度）两个直接目的性状，并给予前者较大权重的指数较为理想。

The results showed: both DCAB ( 20meq/ 100gDM) and Chinese herbal additive ( 30g/ d per a sheep) elevated the contribution of the production trait of fatting sheep. And when the two interacted, the effect of additive contribution was significant.

结果表明：DCAB（20meq/100gDM）与中草药添加剂30g/（d.只）均有提高育肥羊生产性能的作用，双方共同作用时对提高育肥羊的生产性能有明显的加性组合效应。

Silk vigor is an important trait that effects hybrid seed production and hybrid production in maize.

花丝活力长短在一定程度上影响着玉米制种产量和杂交种产量,对玉米生产具有重要意义.

The influence of interaction of Dietary Cation-anion Balance ( DCAB) and Chinese herbal additive on the production trait of ( Poll Dorset × Small Tail Han) F1 fatting sheep was studied by feeding and digesting test.

通过饲养试验、消化试验探讨阴阳离子日粮（DCAB）与中草药添加剂的互作对F1代育肥羊（无角多赛特×小尾寒羊）生产性能的影响。