摘要
通过"3414"试验设计,研究不同施肥处理对干旱区滴灌克瑞森葡萄肥料利用率及戈壁土壤肥力的影响。结果表明:不同施肥处理中,均以氮、磷、钾配合施用处理(N2P2K2)的氮、磷、钾肥料利用效率及肥料偏生产力最高,其中N2P2K2处理的氮、磷、钾肥料利用率分别为40.12%、16.67%和38.56%;肥料偏生产力分别为51.53 kg/kg、68.58 kg/kg和102.87 kg/kg。N2P2K2处理不同深度戈壁土壤氮、磷、钾及有机质含量呈规律性变化趋势,花前氮、钾及有机质含量明显高于果实采收后,磷含量明显低于果实采收后;果实采收后各个施肥处理土壤肥力大部分高于花前,长期施肥显著影响克瑞森葡萄果实采收后戈壁土壤养分含量。因此,无论提高肥料利用率还是保持戈壁土壤肥力,均应选择氮磷钾配合追施。
Abstract： The experiment was carried out to study the effects of different fertilizer applications on the fertilizer use efficiency and soil fertility for gobi soil cultivated Crimson Seedless grape with drip irrigation in dry region using 3414 field experiments design. The result showed that the fertilizers recovery and partial factor productivity were the highest in the N2P2K2 treatment. The NPK fertilizers use efficiency were 40.12%, 16.67% and 38.56% in the N2P2K2 treatment, partial factor productivity were 51.53 kg/kg, 68.58 kg/kg and 102.87 kg/kg in the N2P2K2 treatment. The NPK fertilizers and organic matter content showed a regular change trend at different depth of gobi soil in the N2P2K2 treatment. N, K and organic matter content before flowering were significantly higher than that after harvest. P content was higher before flowering than after harvest. In general, soil fertility of each treatment was higher after harvest than before flowering. Long-term fertilization significantly influenced gobi soil nutrient content after grape fruit harvest. So for fer- tilizer use efficiency or to maintain soil fertility, fertilization in this region should select nitrogen phosphorus potassium complex.
出处
《吉林农业科学》
CSCD
北大核心
2014年第4期31-34,53,共5页
Journal of Jilin Agricultural Sciences
基金
农业部农垦农技推广专项(2013355)
新疆生产建设兵团产学研专项(2010ZX02)
关键词
滴灌
克瑞森葡萄
田间肥料
肥料利用率
戈壁土壤肥力
Drip irrigation
Crimson Seedless grape
Field fertilizer
Fertilizer use efficiency
Gobi soil fertility
