山西省吉县地处吕梁山区,大部分耕地分布于黄土丘陵上,土壤瘠薄,水源奇缺,水土流失严重,粮食作物以玉米为主。如何变“三跑田”为“三保田”,保证稳产高产,是我县耕作制度改革的一项重要课题。1975年县农机所经过反复试验,把农机与农艺结合起来,摸索出适合当地条件的一种新的耕作方法——机轮沟沟种法。几年来,沟种玉米比传统的平翻平作法,显示出明显抗旱增产作用,1978—1980三年试验,沟种法比壕种法增产25.5%,比传统的平作法增产36.2%。一、沟种法的好处1.蓄水保墒,抗旱防涝沟种法地表形成沟垄,波状起伏,耕层 Jixian County, Shanxi Province is located in Luliang Mountain, most of the arable land distributed in loess hills, barren soil, water scarce, serious soil erosion, corn-based food crops. How to change “Three Kau Fields” into “Three Guarantees” to ensure a steady and high yield is an important issue for the reform of farming system in our county. In 1975, county agricultural machinery after repeated tests, the agricultural machinery and agronomic combine to explore suitable for the local conditions of a new farming method - the wheel and groove method. In recent years, furrowing corn has been more effective than the traditional flattening method, showing obvious drought-resistant and yield-increasing effects. In the three years of 1978-1980, the furrow method increased the yield by 25.5% and increased by 36.2% over the traditional flat method. First, the benefits of furrow method 1. Water storage and soil conservation, drought and drought Ditch method of surface formation of furrows, undulating, tillage