摘要
轮作和施肥均有显著的增产作用。在不施肥的条件下,轮作与连作相比,七个轮作方式的年平均增产量为-7—143斤/亩。施肥与不施肥处理相比,施油饼、高肥、中肥和低肥各处理的年平均增产量(斤/亩)分别为165、116、94和47。麦豆轮作和油麦轮作投入少、土地用养合理、稳产、主作小麦占总产的比重大、经济效益高,应因地制宜地利用。在年平均亩产量384斤的条件下,在其它营养元素不缺少的情况下,每料作物亩施N11斤,p_2o_55—6斤,即可实现年平均亩产小麦500多斤的产量指标。
Rotation and fertilizer application have the apparent effects on yield increase. In the case of no fertilizer application,and in comparison of rotation and continuous cropping, the annual average yield increase by 7 rotation patterns is from minus 11 to 143 jin/mu. In comparison of treatment of fertilizer application with no fertilizer application, the annual average yield increase in each treatment of rapeseed cake application, high, medium and low fertilizer application is 171 jin/mu, 160 jin/mu, 128 jin/mu and 109 jin/mu respectively. In wheat and pea rotation, wheat and rape rotation,there is less input so that land use and land betterment are rational. The major wheat crop consists of the principal portion of total yield with high economic returns.This approach should be used according to local conditions.In the case of annual average wheat yield of 384 jin/mu, and sufficient other nutrient elements in soils, the annual average, wheat yield per mu can obtain its yield index of over 500 jin when 11 jin of N fertilizers and 5—6 jin of P_2O_5 fertilizer are applied.
出处
《干旱地区农业研究》
CSCD
北大核心
1989年第4期1-11,共11页
Agricultural Research in the Arid Areas
