陕北丘陵区水坝地粮食高产栽培技术研究

Research on high-yield culture technology of grain on flatland in hilly and gully region of Shaanbei

摘要: 根据最优设计原理，采用最优混合设计组合成l1个处理试验研究表明，1998年小区最高产量为12．92t／hm²．1999年小区最高产量达13．815t／hm²，2000年小区最高产量达15．018t／hm²。由计算机计算筛选出343个方案，其中15～17．625t／hm²产量的最优组合方案为施有机肥60t／hm²，追肥施N 素462～483kg/hm²，播前浇底墒水600t/hm²，补灌1377～1458t／hm²，马铃薯套种高粱种植密度为马铃薯7．2705～8．3415万株／hm²，高粱6．5205～7．5915万株／hm^2。

Abstract: Using the best mixed plan，the experiment of 11 treatments show that the highest plot outputs of 1998，1999 and 2000 reach 12．92t／hm²．13．815t／hm² and 15．018t／hm²。respectively．343 plans are obtained through computer design，the best combination plan with yield of 15～17．625t／hm² is to use 60t／hm² of organic manure，462-483kg／hm² of N，to irrigate 600t／hm² of water before seeding，1377～1458t／hm²。of water in crop growth，to maintain the density of potato and sorghum with 72705～83415 plant／hm²。and 65205～75915 plant／hm² respectively．