甘肃渭河流域夏大豆丰产高效栽培模式研究

THE STUDY ON HIGH YIELD AND BENEFICIAL CULTIVATED MODEL OF SUMMER SOYBEAN IN GANSU PROVINCE WEIHE RIVER VALLEY

甘肃渭河流域夏大豆种植区位于黄淮海流域夏大豆区最西端,海拔高,麦后无霜期短,单产低。本研究采用综合农艺措施数学模型研究与单因子试验相结合的方法,通过“双目标”(产量、效益)筛选,提出了该生态区在灌水条件下夏大豆亩产165—200公斤(比习惯栽培增产25％以上)、技术性增投比2.5—6.5的优化栽培方案,经生产示范,实用有效。 本文并就密度、氮、磷对产量的影响与东北春大豆区、黄淮流域夏大豆区的低海拔地区进行了比较和讨论。

The summer soybean region of Gansu Weihe River Valley is located in the most western part of summer soybean plant area of Yellow and Huaihe River Valley. In this region, elevation is high, frost-free season after harvested of winter wheat is short and yield of summer soybean is low. The authors combined the results of mathematics mode] research of synthetical.agrotechnical measures with those of monofactorial test, and based on high yield and good benefit, the following soybean cultivation scheme was suggested in this ecological region which is able to let soybean to achieve 165-200 kg yield per mu (increasing 25 percent yield then usual cultivation methods) , and the net output is 2. 5-6. 5 times to that of the technical input under irrigated condition. The scheme is proved to be functional and effective by practice,In this paper, yield of summer soybean affected by plant density, amount of nitrogen and phosphorus application in this region was comparied with that of eastern Yellow River and Huaihe River Valley and spring soybean region in the northeastern part of China.