摘要
黄土丘陵区旱地谷子的氮磷肥效研究表明,在离村较远、施有机肥少、土壤熟化程度低的田块,氮磷最佳施肥量为3.5kgN/亩和5kgP_2O_5/亩;离村较近、连年施用较多有机肥、土壤熟化程度高的田块,土壤磷素丰富,可不施或少施磷。氮肥最佳量为5～8kgN/亩,一般中肥力地,最佳施肥量为6kgN/亩和4kgP_2O_5/亩。
Research results of N and P fertilizer respones to Rainfed land millet in the loesshilly regions indicated that the optimum N and P fertilizer application was 3.5 kg/muand 5kg P_2O_5/mu in the poor matured fields with less organic fertilizer added and faraway from the villages,and that no or less N and P fertilizers were added to the high ma-tured fields with more organic fertilizer added in succesive years and rich in soil P andnear the villages. The optimum N application was 5～8 kg/mu. In general, 6kg N/muand 4 kg P_2O_5/mu were added to the fields with medium fertility.
出处
《干旱地区农业研究》
CSCD
北大核心
1993年第1期54-58,共5页
Agricultural Research in the Arid Areas
关键词
谷子
施肥
氮肥
磷肥
millet
loess hilly region
N fertilizer
P fertilizer
