摘要
试验采用早熟品种鲁原单 14 (LD14 )、中熟品种掖单 2 2 (YD2 2 )、晚熟品种掖单 13(YD13)为代表品种进行春夏玉米套作 ,研究其对全株饲用生物产量及粗蛋白、粗纤维、粗脂肪产量的影响 ,旨在筛选全年优质高产的套作品种组合。研究结果表明 ,套作对春玉米生物产量和营养价值影响不显著 ,但对夏玉米的影响显著。当夏玉米同一品种与春玉米不同品种套作时 ,夏玉米生物产量和营养价值表现为 :与春玉米LD14套作 >与春玉米YD2 2套作 >与春玉米YD13套作。就全年籽粒产量而言 ,YD2 2 YD13是最好的组合 ;但是综合考虑生物产量、籽粒产量、粗蛋白产量、粗脂肪产量及粗纤维产量时 ,全年较好的套作模式除YD2 2 YD13外还有YD13 YD13和YD13 YD2 2。
Three different maturity cultivars, premature Luyuandan 14 (LD14), medium mature Yedan 22 (YD22) and late mature Yedan 13 (YD13), were chosen to study the effects of different maturity maize cultivars relay-cropping in spring-sowing and summer-sowing on biomass, grain yield, and nutritive values of whole plant for feeding. The results indicated that relay-cropping with different mature summer-sowing maize cultivars, there were no obvious effects on biomass, grain yield, and nutritive values (crude protein yield, crude fiber yield, crude fat yield) of the same spring-sowing maize cultivars. But relay-cropping with different mature spring-sowing maize cultivars could obviously affect the biomass, grain yield, and nutritive values of the same summer-sowing maize cultivars. The order of biomass, grain yield, and nutritive values of the same summer-sowing maize cultivars was: relay-cropping with spring-sowing LD14> relay-cropping with spring-sowing YD22> relay-cropping with spring-sowing YD13. From the evaluation of grain yield of the whole year, YD22/YD13 was the highest treatment. But according to biomass, grain yield, and crude protein yield, crude fiber yield, crude fat yield of the whole year, the better ones were: YD13/YD13, YD13/YD22, and YD22/YD13.
出处
《作物学报》
CAS
CSCD
北大核心
2004年第5期443-448,共6页
Acta Agronomica Sinica
基金
国家自然科学基金 ( 3 9870 5 2 4)资助
