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麦/青贮玉米—稻粮饲结合种植制,在满足粮食生产的基础上还能为奶牛提供较多数量的青贮饲料,近几年该种植方式在上海郊区迅速发展,种植面积已达数万亩,但由于产量不高不稳,难以满足奶牛对青饲料的需要,其原因来自品种、栽培技术、肥料运筹和气候等方面。本文仅就青贮玉米合理栽培密度、适宜播期作一初步探讨。一、材料和方法(一)试验地基本情况青贮玉米栽培密度试验于1988年度在上海县颛桥、宝山区扬竹、青浦县大盈三地进行;播期试验于1988年度在扬行乡扬北进行,土壤养分状况见表1。
Wheat / silage corn - rice grain combined with planting system, in meeting the food production can also provide a larger number of cows for silage, in recent years the rapid development of the cultivation methods in Shanghai suburbs, planting area has reached tens of thousands of acres However, due to the low and unstable output, it is difficult to meet the needs of dairy cattle for green fodder. The reasons for this are the varieties, cultivation techniques, fertilizer operation and climate. This article only reasonable cultivation of silage corn density, sowing date for a preliminary study. I. Materials and methods (I) Basic situation of the experimental site Silage corn planting density test was conducted in 1988 in Zhuanqiao, Shanghai, Yangzhu, Baoshan District and Daying, Qingpu County. The sowing date was in Yangbei, Yangbei For soil nutrient status see Table 1.