摘要
本文研究了在施纯磷40公斤、纯钾44公斤/公顷的基础上,不同氮肥水平对非洲狗尾草,纳罗克种子产量和干物质的影响。据1987年至1989年3年結果表明:在有磷、钾肥的基础上增施氮肥,种子产量和干草产量均显著增加。每公顷施纯氮161公斤效果最好,种子产量达708.10、336.67与367.80公斤/公顷,干草产量可达22077、10499与10375公斤/公顷。
A preliminary study was conducted on the effects of different rates of N on the seed and dry marter yields of setaria sphacelated cv.Narok at basal rates of 40 kg P and 44 kg K ha^(-1). It was indicated that the seed and dry yields were apparently increased by the application of nitrogen fertilizers.The respective highest seed and dry matter yields recorded were 708.1, 336.67, 367.8 and 2207, 10499, 10375 kg ha^(-1) when fertilized with 161 kg N ha^(-1) for three years from 1987 to 1989。
出处
《草业科学》
CAS
CSCD
北大核心
1991年第2期64-68,共5页
Pratacultural Science
