摘要
为探索饲料油菜不同刈割时期对生物量及营养品质的影响及稳定性,以高蛋白饲料油菜牲饲 2 号刈割时期(初花期、盛花期和终花期)为试验因子,采用单因素随机区组设计,研究不同时期刈割、不同种植地点及两者互作对牲饲 2 号植株生物量、营养品质的影响.研究结果表明:刈割时期和种植地点可极显著地影响牲饲 2 号植株鲜重、显著影响植株干重,但互作效应对鲜重和干重的影响均不显著.种植地点除对粗脂肪含量的影响不显著外,对粗蛋白质、粗灰分、钙、磷、粗纤维、中性洗涤纤维及酸性洗涤纤维含量的影响均达极显著水平;刈割时期对粗蛋白质和粗灰分含量的影响不显著,对磷含量的影响达显著水平,对其他营养成分含量的影响则达极显著水平;地点和刈割时期互作对粗蛋白质、粗脂肪和粗灰分的影响不显著,对其他营养成分含量的影响均极显著.稳定性分析表明,盛花期刈割的鲜重及粗蛋白质、钙、磷含量在两试点的变异度最小,分别为 0.32%、0.05%和 19.09%;初花期刈割的干重、粗脂肪、粗灰分、粗纤维、中性洗涤纤维、酸性洗涤纤维含量变异度最小,分别为 1.46%、4.59%、5.90%、1.95%、2.44%和2.06%.综合干物质和营养成分产量,终花期刈割优于盛花期和初花期,黔西点优于长顺点.
Abstract
In order to evaluate the effects and stability of biomass and nutrient content under different mowing times in feed Brassica napus,the mowing time in initial flowering stage,full flowering stage and final flowering stage of Shengsi No.2(feed Brassica napus)were selected as experimental factor.A single factor randomized block design was used to study the effects of mowing time,planting sites and their interaction on biomass and nutrient content on Shengsi No.2.The results showed that the fresh weight and dry weight of Shengsi No.2 were very significantly affected by mowing time and planting location,but the interaction effect had no significant effect on both fresh weight and dry weight.The crude protein,crude ash,calcium,phosphorus,crude fiber,neutral detergent fiber and acid detergent fiber content were very significantly affected by planting location except crude fat content.The crude protein and crude ash were not significantly affected by cutting period,but a significantly difference was detected on phosphorus contents and a very significantly difference was detected on other nutritional ingredient between cutting periods.There were no significantly difference on crude protein,crude fat and crude ash under interaction effect of planting site and mowing period except on other nutrients.The stability analysis showed that the content of fresh weight,crude protein,Calcium content and Phosphorus in full flowering period had the least variability in the two plots.In addition,the content of dry weight,crude fat,coarse ash,crude fiber,neutral washing fiber and acid washing fiber in initial flowering stage also had the least variability in the two plots.However,the best mowing time was final flowering stage and the suitable planting plot was Qianxi county considered of the yield of dry matter and nutrients of feed Brassica napus Shengsi No.2.
基金项目
贵州省科技计划项目(黔科合基础-ZK[2022]一般289)
贵州省科技计划项目(黔科合支撑[2020]1Y108)
NETL
NSTL
万方数据