大戛乡是贵州省织金县一个主要产粮区。1958年前,这里草场宽阔,牧草繁茂,有茂密的森林600多hm~2。这些林草植被不仅调节了气候,同时也涵养了水源保护了土壤。全乡有29处山泉,灌溉着大戛田坝70多hm~2农田,常年单产达6000kg/hm~2以上。全乡年产粮100多万kg,是一个山青水秀、五谷丰登、六畜兴旺的富裕乡。可是,由于后来“以钢为纲”、“以粮为纲”,大量毁林毁草开荒,盲目增加耕地面积,森林和草场资源急剧减少,造成生态恶化,灾害频繁,山泉枯竭,短短数年,这里就变为织金县的一个水土流失严重、农业生产 Daya Village is a major grain-producing area in Zhijin County, Guizhou Province. Before 1958, the pasture here was vast and covered with grassy pastures with more than 600 hm 2 of dense forests. These forest and grass vegetation not only regulate the climate, but also conserve the water to protect the soil. The township has 29 spring, irrigated Daqia Tianba more than 70 hm ~ 2 farmland, perennial yield of 6000kg / hm ~ 2 or more. The township, with an annual output of more than 100 million kg of grain, is a beautiful, bumper grain harvest, rich livestock six livestock. However, due to the later “taking steel as the key link” and “taking grain as the key link”, a large number of deforestation and wasteland reclamation were implemented, the area of ​​cultivated land blindly increased, and the resources of forests and grasslands drastically decreased, resulting in ecological deterioration, frequent disasters, In this year, it becomes a serious water and soil loss in Zhijin County, agricultural production