饲用黑麦适宜青刈时期及青刈次数研究

在河北低平原区对饲用黑麦Secale cereale的青刈时期及青刈次数研究表明:饲用黑麦以收获鲜草为目的,进入果园生态系统与果树间作是可行的.随着刈割时期的推迟,鲜干比、茎叶比、粗蛋白含量逐渐下降;在抽穗期结束其生育进程前提下,从鲜草、干草、粗蛋白产量综合比较,青刈次数1次优于2次,1次刈割最佳时间在饲用黑麦的抽穗初期至抽穗期;饲用黑麦春季要进行多次刈割时,每次刈割时株高应在50 cm以下(拔节期以前)进行.到孕穗期则不能再刈割,否则不能再生.

Study on the appropriate harvest date and harvest times of forage rye

A study on the harvest date and harvest times of forage rye(Secale cereale) was conducted in the Hebei Lowland Plain.The results showed that: the forage rye as a kind of fresh forage being introduced into orchard ecosystem was feasible;the fresh weight and dry weight ratio,stem and leaf ratio and gross protein content decreased with the delay of harvest date.Based on the fresh,dry forage yield and gross protein yield,the one-time harvest was better than two-times harvest on condition that it fully completed its development before heading;the optimum harvest date for the one-time harvest was from early heading period to heading.If a multi-harvest was carried out(before lodging) in spring,the plant height ought to be less than 50 cm,and must stop cutting at booting or it will fail to regrow.