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牧草混播,不仅可以提高牧草的产量和品质,还有恢复土壤结构,提高土壤肥力等作用.但混播中草种的组合、种子的配合比例、播量等技术指标,还要试验研究.为此,从1981年开始,我们以无芒雀麦代表禾草,红豆草代表豆科草种,进行混播试验,结果如下.一、试验地的自然条件试验地设在右玉水保站内,海拔1,340米,砂质壤土,中性,肥力一般.年降水450毫米左右,集中于7、8月份。年平均气温3.5℃,极端最低气温-37.8℃.春早多风,年蒸发量1,700毫米.无霜期100天左右,早霜在8月上旬出现,晚霜于6月上、中旬结束.二、内容与方法为了探索牧草混播的丰产条件,对不同的配合比例、播量及播种方式等因素与产量的关系进行试验。播种方式采用混子条播和
Mixed pasture can not only improve the yield and quality of pasture, but also restore the soil structure, improve soil fertility, etc. However, the mixed sowing of grass species, the proportion of seeds, sowing and other technical indicators, but also experimental study. , Since 1981, we have representatives of grasses and grasses of legumes on behalf of grasses and saplings of leguminous plants, and conducted the mixed-sowing test. The results are as follows: 1. The natural conditions of the experimental sites were experimentally located at Youyu Water Conservation Station with an elevation of 1,340 meters , Sandy loam, neutral, fertility average annual rainfall of about 450 mm, concentrated in July and August. The annual average temperature of 3.5 ℃, the extreme minimum temperature of -37.8 ℃. Spring early windy, the annual evaporation of 1,700 mm. Frost-free period of about 100 days, the early frost in early August, night cream in June, mid-end. In order to explore the high-yielding conditions of mixed pasture, experiments were carried out on the relationship between yield and proportion, sowing rate and planting methods. Sowing method using mixed seed broadcast