利用棉花冬闲田种植冬牧70黑麦牧草研究

STUDY ON PLANTING WINTERGRAZER-70 FOR UTILIZING FALLOW COTTON FIELD IN THE LOW-LAND AREAS OF HEBEI AND SHANDONG PROVINCES

对利用棉花冬闲田种植冬牧７０黑麦的经济效益、生态效益以及推行冬牧７０黑麦一棉花种植方式的限制因素进行了分析。冬牧７０黑麦在冀鲁低平原地区早春的温度条件下生长迅速；在棉花播种前，种植冬牧７０黑麦有利于后茬作物棉花的生长发育；冬牧７０黑麦牧草饲喂肉牛，可使育肥周期明显缩短，饲料报酬率显著提高。

Wintergrazer-70 grows very fast under the temperature condition in early spring inHebei and Shandong low-land areas,for this riason ,very high production of its herbage wasobtained before the seeding of its after-crop-cotton, It even contributes to the growth and de-velopment of cotton with planting wintergrazer-70. The cattle-feeding expriment showedtht the cattle、fattening-period was shortened and feeding-return have been griatly im-proved.In this article, the economic and ecologic benefits from planting wintergrazer-70 incotton′s former-stubble were analysed,and the lirniting factors on the practising method ofwintergrazer,700-cotton were also analysed。