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1995年在黄土高原峨嵋岭台地的典型旱地上,每公顷钻67500个直径8cm、深100cm的孔洞,填入耕层肥土制成“营养柱”,而把其中取出的阴土翻到地表起垅,每营养柱种一株棉花,结果每公顷产籽棉2098.5kg,皮棉729kg,比传统耕作法增产籽棉40.9%,皮棉49.8%,且株高增40.2%,茎干重增64.2%。“营养柱”集水、肥、光、气、热、根于一起,拔柴后越冬前测定,柱内40cm~100cm土中含水量、根长及根干重分别比对照的高72.9%、391.6%及802%,地面杂草及水蚀养份流失均明显减少,表现出很大的生产生态潜力
In 1995, on a typical dry land in the Emerald Ridge on the Loess Plateau, 67500 holes with a diameter of 8 cm and a depth of 100 cm were drilled in the heights of up to 100 cm per hectare.垅, a column of nutrition for each type of cotton, the results per hectare yield seed cotton 2098.5kg, lint 729kg, than the traditional farming method to increase seed cotton 40.9%, lint 49.8%, and plant height increased 40.2%, stem Replenishment 64.2%. “Nutritional column” collected water, fertilizer, light, gas, heat, root together, after firewood measured before winter, the column 40cm ~ 100cm soil water content, root length and root dry weight respectively higher than the control 72.9 %, 391.6% and 802% respectively, the loss of weeds and water erosion nutrients decreased significantly, showing a great potential for ecological production