论文部分内容阅读
所谓水平沟种植,就是指在山坡地上沿等高线开沟起垄的种植方法。它有利于保水、保土、保肥,充分利用土、水、光,热、气等自然资源,既是一种水土保持耕作法,又是一种抗旱耕作法,在年降雨量300～500毫米的半干旱山区值得大力提倡和推广。其具体做法是:一、等高开沟沟距应以地形和牧草而定,一般1.5～2尺。在伏翻、秋翻或早春顶凌耙耱的基础上,先用步犁沿山坡等高等线开沟,然后再用耩子在沟内套耕一次。开沟起垄的顺序是陡坡要自上而下,以防浮土下滑埋沟;缓坡要自下而上依次进行。二、适时播种牧草四季均可播种,可因地制宜采用。一般春播产草量高,夏季雨后抢墒播种虽出苗快,但产草量不如春播高;秋播正值7～8月雨季,对牧草出苗非常有利,但当年产草量低,越冬困难;十月下旬至十一月上旬立冬前“抱蛋”播种,
The so-called horizontal ditch planting, refers to the hillside along the contour ditching Ridge cultivation methods. It is conducive to water conservation, soil conservation, fertilizer, make full use of soil, water, light, heat, gas and other natural resources, both a soil and water conservation farming methods, but also a drought farming method, the annual rainfall of 300 to 500 mm Semi-arid mountainous areas deserve much promotion and promotion. The specific approach is: First, contouring ditch should be based on topography and pasture may be, generally 1.5 to 2 feet. On the basis of volt-turn, autumn turn or early spring top raking, use a plow to open a ditch along a high line such as a hillside and then use a razor clam to tuck it once in the ditch. The order of ditching and ridging is that the steep slope should be from top to bottom, so as to prevent the floating earth from descending the buried furrow; the gentle slope should be conducted from bottom to top. Second, timely sowing forage seasons can be sown, can be used according to local conditions. Generally spring seeding grass production is high, after summer rains grab moisture sowing seedling fast, but the grass yield is not as good as the spring sowing; autumn sowing positive rainy season from July to August, very good for the emergence of forage grass, but the current low production of grass, winter difficulties ; Late October to early November before the winter “hold egg” sowing,