Effects of harvesting period on forage yield and nutritional quality of triticale in Northwestern He'nan Province
The experiment aimed to determine the optimal harvesting period for triticale in Northwestern He'nan Province,and to study the effects of the mowing period on the agronomic traits,yield,and nutritional quality of different triticale varieties.The experiment used six varieties as experimental materials:Zhong Si 3366(ZS3366),Zhong Si 1640(ZS1640),Zhong Si 1257(ZS1257),Zhong Si 1048(ZS1048),Shi Da No.1(SD1),and Gan Nong No.2(GN2).Four harvesting treatments were set up:Jointing stage(JNT),booting stage(HD),flowering stage(FLW),and milky stage(MLK),with the JNT treatment involving a second harvest of the regrowth at the milky stage.The results showed that as the growth period progressed,the plant height and dry hay yield continued to increase overall,while fresh hay yield first increased and then decreased.The fresh hay yield was in the order of HD＞JNT＞FLW＞MLK,and the dry hay yield was in the order of MLK＞FLW＞HD＞JNT.As the growth period progressed,the nutritional quality of the ryegrass decreased.Compared with JNT,the crude protein content and relative feed value of MLK decreased,while the content of acid detergent fiber and neutral detergent fiber increased.The crude protein content was extremely positively correlated with moisture and feed value(P＜0.01),and extremely negatively correlated with the content of acid detergent fiber and neutral detergent fiber(P＜0.01).The study indicates that SD1 has a higher comprehensive evaluation at different harvesting stages compared to other varieties,and the plant height,dry hay yield,and crude protein yield during the FLW stage are all higher than those of other varieties.Considering both yield and nutritional quality,the optimal harvesting period for triticale in the Northwestern He'nan Province is the flowering stage,and the variety SD1 has outstanding comprehensive traits,making it suitable for planting and promotion in this area.
triticaleharvesting periodforage yieldnutritional qualityNorthwestern He'nan Province
万方数据
维普
