摘要
研究证明:土壤基础肥力差,而化肥施用量又少、品种老化混杂、亩穗数严重不足是影响目前西藏春青稞大面积丰产的主要限制性因子。并依次提出了在广大中低产农区应以增施化肥和有机肥为主要增产措施,同时要适当增加播量,改进播种质量,提高出苗率,以保证群体的足够穗数;在一般中产农区应更换品种和增施化肥并重;随着肥力的进一步提高,耐肥高产品种的选用尤为突出。
By analysing the data of the test on the appropriate culture techniques for the new improved varieties of highland barley, it was proved that poor soil fertliity, aged varieties and less quantity of spike per unite area were the main restrictive factors, and it was indicated that using improved varieties increasing amounts of fertilizer applicotion,and sowing norm.rasising the rate of emergence were the major technical measures to get high yield of spring highland barley. For the wild low-middle yield fields, the critical Practices were to increase the number of plants and spikes Per unite area by adding the seed quantity and the rate of emergence properly. For middle yield fields, the important measures were both using improved varieties and increasing fertilizer. The fertilizer tolerant and hieh yield varieties were more necessary as that the amount of frtilizer applied is en-chanced in future.
出处
《西南农业学报》
CSCD
1990年第1期50-55,共6页
Southwest China Journal of Agricultural Sciences
关键词
青稞
丰产栽培
春青稞
施肥
Highland barley, Grain yield, Major restrictive factors, Cultural Practices
