毛叶苕子繁种田根茬还田供氮能力的研究  

Study on the Capability of Vicia villosa Roth. Stubble in Multiplication Field Providing Nitrogen

作　　者：薛志强[1] 郝保平[2] 曹建琴[3] 张延芳[3] 张海峰[3] 张鑫 曹卫东[5] 郑普山[2] 

机构地区：[1]山西省农业科学院右玉农业试验站,山西右玉037200 [2]山西省农业科学院农业环境与资源研究所,山西太原030031 [3]山西省农业科学院,山西太原030031 [4]万荣县果业发展中心,山西万荣044200 [5]中国农业科学院农业资源与农业区划研究所,北京100081

出　　处：《山西农业科学》2017年第1期75-77,110,共4页Journal of Shanxi Agricultural Sciences

基　　金：国家公益性行业(农业)科研专项(201103005)

摘　　要：为明确毛叶苕子(Vicia villosa Roth.)繁种田根茬还田提供土壤氮的能力,以无根茬田为对照,以坝莜1号燕麦为供试作物,比较了毛叶苕子繁种前后0~20 cm土壤养分状况,在山西省右玉县开展了毛叶苕子茬口不同施氮量农田试验研究。结果表明,毛叶苕子繁种后,0~20 cm土壤有机质、全氮、碱解氮分别比繁种前提高了0.09,0.002 g/kg和3.6 mg/kg;无根茬田施用100%N与毛叶苕子茬口施用90%N的燕麦产量无差异,毛叶苕子繁种田根茬还田的供氮能力相当于6.90 kg/hm^2的化肥氮;毛叶苕子茬口不同施氮量比无根茬施用100%N的氮肥偏生产力提高了1.95~6.67 kg/kg。研究结果可为开展晋西北丘陵区毛叶苕子繁种、提高后作杂粮产量提供理论依据。To determinate the number of hairy vetch（Vicia villosa Roth.）stubble providing nitrogen for multiplication soil, different doses of nitrogen application for Vicia villosa Roth. stubble field experiment were carried out in Youyu, Shanxi province. Soil nutrients in0-20 cm of Vicia villosa Roth. multiplication field, naked oats yield and nitrogen partial factor productivity were analyzed. The results showed that Vicia villosa Roth. multiplication increased soil organic matter, total nitrogen, alkali solution nitrogen by 0.09, 0.002 g/kg and 3.6 mg/kg. Compared to the control（no stubble with no nitrogen）, Vicia villosa Roth. stubble in field with no nitrogen increased yields of naked oats 190.1 kg/hm-2 and applying 70%-90% dose of nitrogen significantly increased the yield of naked oats. The yields from Vicia villosa Roth. stubble with applying 90%N were not significantly greater than those from the no stubble with applying 100%N. The number of per hectare Vicia villosa Roth. stubble providing nitrogen for soil was equivalent to 6.9 kg chemical N. Compared with no stubble with applying 100%N, nitrogen partial factor productivity of Vicia villosa Roth. stubble in field with different dose of N increased1.95-6.67 kg/kg. In a word, Vicia villosa Roth. stubble in multiplication field has an effect on improving soil fertility and crop production,Vicia villosa Roth. seeds multiplication can be involved in green manure-coarse cereals rotation system in northwestern hilly-gully region in Shanxi.

关 键 词：毛叶苕子 绿肥 燕麦产量 根茬还田 氮肥偏生产力 

分 类 号：S142.1[农业科学—肥料学]