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辽河中下游分布着大量的懈土。懈土不宜作垄,作垄后,遇水就塌垄。农民称这种土壤为懈土。懈土多数分布在低洼易涝地区。每到雨季,地面积水,垄易变平,高秆作物极易倒伏,排水更加不畅,严重地影响农业生产。高垄(大垄)种植已成为根治低洼易涝土壤的一项良好的农业技术措施。旅大地区玉米大垄密植能增产20—40%,光辉农场大垄种植增产8.6%。但是,由于土壤发懈,作垄后垄体易塌,因而,在土壤发懈地区,高
The middle and lower reaches of Liao River with a lot of slack soil. Tuo soil should not be ridge, ridge, the water on the ridge. Farmers call this soil reluctant. Tuo soil mostly distributed in the low-lying waterlogging areas. Every rainy season, the surface area of water, flat furrows, high stalks prone to lodging, drainage is more sluggish, seriously affecting agricultural production. High ridge (big ridge) planting has become a cure low-lying flood-prone soil a good agricultural technology measures. Large area of Luda large ridge planting density can increase 20-40%, brilliant farm big ridge planting yield 8.6%. However, due to the weakness of the soil, the ridge is easily collapsed after being used as a ridge. Therefore,