摘要
为确定关中地区覆膜花生的增产效应,以及覆膜条件下花生的适宜施氮量,设置不覆膜(W0)和覆膜(W1)2种方式,并结合N0(0 kg/hm^2)、N2(60 kg/hm^2)、N4(120 kg/hm^2)、N6(180kg/hm^2)、N8(240kg/hm^2)、N10(300kg/hm^2)6个施氮量,研究了花生覆膜条件下不同施氮量的地上部干物质积累量、农艺性状、产量、耗水量、水分利用效率。结果表明:覆膜(W1)处理较不覆膜(W0)处理花生增产显著,在不同的施氮量下增产幅度为17.3%～24.8%,同时也能提高花生的水分利用效率,提高幅度为16.1%～22.9%。另外,花生产量、水分利用效率与施氮量呈明显的抛物线趋势,在施氮水平N0～N4时,随着施氮量的增加先增加,N6～N10时,随施氮量的增加而降低,在施氮水平为N4,二者均达到最大。因此,覆膜条件下的施氮量为120kg/hm^2时,即本实验中的W1N4处理,是关中地区花生的适宜种植和施氮策略,其相比较于W0N0处理,产量和水分利用效率提高最大,分别为47.2%和47.8%。
In order to determine the effect of increased production of peanut covered with plastic film in the Guanzhong area and the appropriate amount of nitrogen applied to peanuts under plastic film,the two ways of none coating with film (W0)and coating with film (W1)were set and combined with six nitrogen application rates,including NO (0kg/hm^2),N2(60kg/hm^2),N4(120kg/hm^2),N6 (180kg/hm^2),N8(240kg/hm^2),and N10(300kg/hm^2).The above-ground dry matter accumulation,agronomic traits,yield,water consumption,and water use efficiency of peanuts under different filming conditions were studied.The results show that the treatment with the film (W1)has significantly higher production than that with the non-film (W0)treated peanuts,and the yield is increased by 17.3%to 24.8%under different nitrogen application rates;at the same time,the water use efficiency of the peanuts can also be improved about 16.1% 22.9%.In addition,the peanut yield,water use efficiency,and nitrogen application rate show a significant parabolic trend;at the nitrogen application level of N0-N4,it increases first with the increase of nitrogen application rate,while for N6-N10,it decreases with the increase of nitrogen application rate;at the level of nitrogen application N4,both reach the maximum.Therefore,when the amount of nitrogen applied under the covered with film conditions is 120kg/hm^2,the W1N4treatment in this experiment is a suitable planting and nitrogen application strategy for peanuts in the Guanzhong area.Compared with the WON0 treatment,the yield and water use efficiency is increased the most, 47.2%and 47.8%,respectively.
作者
黄鹏
李援农
谷晓博
房云杰
方恒
徐路全
HUANG Peng;LI Yuan-nong;GU Xiao-bo;FANG Yun-jie;FANG Heng;XU Lu-quan(Key Laboratoty of Agricultural Soil and Water Engineering in Arid and Semiarid Areas,Ministry of Education,Northwest A&F university,Yangling 712100,Shaanxi,China)
出处
《节水灌溉》
北大核心
2018年第12期104-108,共5页
Water Saving Irrigation
基金
公益性行业科研专项资助项目(201503105)
关键词
覆膜
施氮量:产量
水分利用效率
film mulching
nitrogen application rates
yield
water use efficiency
