摘要
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。
In 1995, at Wanrong Xijing Village, a typical rainfed area on Loess Plateau, 67 500 holes/hm 2 (with diameter of 8 cm and depth of 100 cm) were drilled. Each hole was filled with 'nutrient column' made of the top soil, and the immature soil taken out from the hole was placed on the top as ridges. On each column, one cotton plant was planted. The result showed the unginned cotton yield of 2098.5 kg/hm 2 and the lint yield of 729 kg/hm 2 were reached, which were 40.9% and 49.8% higher than those with the conventional tillage respectively. The final plant height and stem dry weight were 40.2% and 64.2% higher. With the combination of water, fertilizer, air, heat and roots, the water content,root length, and the dry weight of roots, before winter, in soils at 40 cm～100 cm deep in the columns were 72.9%, 391.6% and 802% higher than those with the conventional tillage respectively.And the weeds, water erosion and nutrient loss were greatly reduced.This proves to have its very productive and ecological advantages.
出处
《干旱地区农业研究》
CSCD
北大核心
1997年第2期44-48,共5页
Agricultural Research in the Arid Areas
基金
山西省自然科学基金
关键词
耕作法
营养柱
棉花
栽培
黄土高原地区
旱地
tillage practice, nutrient column, cotton, cultivation,Loess Plateau
