CAJ | 학술논문

河北低平原区以中饲828和 NTH1048饲用小黑麦为材料,研究了不同刈割时期及刈割次数对其生长发育,饲用品质及产草量的影响,测定分析了不同生育天数内株高、干物质积累量、鲜干比、茎叶比、茎数、粗蛋白含量及二茬草的产草量等性状指标。结果表明：饲用小黑麦的株高、干物质积累量、粗蛋白产量的变化趋势符合 Logistic 生长模型,鲜干比呈递增趋势,茎数、粗蛋白含量呈下降趋势,符合一元线性回归模型,鲜草产量、茎叶比呈现先升高后降低的趋势,符合二次曲线回归模型。综合分析得出,饲用小黑麦1次刈割应在抽穗初期至抽穗期进行,且1次刈割产草量最高为48119 kg/hm2,优于2次刈割产草量,如春季进行多次刈割时,每次刈割应在拔节期以前完成。
하북저평원구이중사828화 NTH1048사용소흑맥위재료,연구료불동예할시기급예할차수대기생장발육,사용품질급산초량적영향,측정분석료불동생육천수내주고、간물질적루량、선간비、경협비、경수、조단백함량급이치초적산초량등성상지표。결과표명：사용소흑맥적주고、간물질적루량、조단백산량적변화추세부합 Logistic 생장모형,선간비정체증추세,경수、조단백함량정하강추세,부합일원선성회귀모형,선초산량、경협비정현선승고후강저적추세,부합이차곡선회귀모형。종합분석득출,사용소흑맥1차예할응재추수초기지추수기진행,차1차예할산초량최고위48119 kg/hm2,우우2차예할산초량,여춘계진행다차예할시,매차예할응재발절기이전완성。
The effect of cutting date and times on forage yield of forage triticale was studied by using Zhong-si-828 and NTH1048 in low plains of Hebei.The plant height,dry matter accumulation,ratio of fresh to dry and stem to leaf,tiller number,crude protein and forage yield were measured.The results indicated that the change of plant height,dry matter accumulation and crude protein yield showed a logistic growth model.The ratio of dry to fresh matter showed an increasing trend,however,the number of stems and crude protein content de-creased,which fitted the linear regression model.Fresh yield and ratio of stem to leaf were firstly increased and then decreased.It suggested that cutting once was the best and it should be between early heading and heading stage.Each cutting should be carried out before jointing stage if more than one cutting.