旱地缓释氮肥与普通尿素配施对覆膜蚕豆产量和经济效益的影响

Effects of Combined Uses of Slow Release Nitrogen Fertilizers with Urea for Yield and Economic Returns of Plastic Film Mulching Faba Bean in Dryland Farming

为了探明缓释氮肥与普通尿素配施对青海省旱作区覆膜蚕豆产量及经济效益的影响,于2014—2015年在旱作试验基地进行了4种不同处理的缓释氮肥与普通尿素(100%缓释尿素、80%缓释尿素+20%普通尿素、60%缓释尿素+40%普通尿素、40%缓释尿素+60%普通尿素)配施试验,以不施氮肥和单施普通尿素作为对照。结果表明:60%缓释氮肥配施40%普通尿素的蚕豆产量为6 445.35 kg/hm^2,比不施肥和施用普通尿素分别增产31.27%和17.23%;与施用普通尿素相比,肥料投入差异不大,但经济效益增值幅度较大,为4 356.66元/hm^2。

A field experiment（2014--2015）was conducted at test base of dryland farming to determine the effects of combined uses of slow release nitrogen fertilizers with urea for yield and economic returns of plastic film mulching faba bean in Qinghai.Those differences treated of 0 （CKI）, only urea （CK2）, 100% slow release nitrogen fertilizers, 80% slow release nitrogen fertilizers＋20% urea, 60% slow release nitrogen fertilizers＋40% urea,40% slow release nitrogen fertilizers＋60% urea.The results showed that the yield of faba bean which 60% slow release nitrogen fertilizers＋40% urea was the highest （6 445.35 kg/hm2） ,compared with no fertilizing and only using urea,the yield increased by 31.27% and 17.23%.The economic benefit value range was larger 4 356.66 yuan/hm2 than in the only using urea even then the fertilizer inputs indifference.