渭北旱塬持续高效农田种植模式研究与示范

根据渭北旱塬自然经济特点 ,提出了该区农业持续发展的关键技术和增产新途径——农田高效优化种植模式 (以双元覆盖小麦为主 )。通过 4a的试验示范与推广 ,结果表明 :该模式可较对照增产小麦6 2 .92 % ;复种黄豆增收 1 5 0 0～ 2 2 5 0 kg/ hm2 ,较对照增产 1 0 0 %。该模式的聚水、保墒、增温和促进有机质矿化、增加土壤养分效应显著 ,可使土壤水、热环境改善 ,充分利用水资源 ,提高用水效率。

HJ4/9]According to the natural and economic characteristics in the Weibei dry plateau, the key technology and new way to increase production, i.e. high efficient and optimized cultivation pattern are present. The results of three years experimental demonstration and popularization show that the production of wheat cultivated by the pattern increases by 62.92% compared with CK, it is about 2 176 kg/hm 2; production of soybean after wheat harvesting (double cropping ) increases by 100%, about 1 500...