摘要
[目的]明确早稻生产中紫云英与化肥的合理施用比例。[方法]以株两优4026作为供试早稻品种，共设7个处理，其中以不施肥作为对照，研究紫云英与化肥配施对早稻产量及经济效益的影响，筛选出紫云英与化肥的最佳配施比例。[结果]各处理的生长性状均优于对照，其中以80％化肥＋20％紫云英处理的株高和穗长最高，分别为87．1和20．9 cm；60％化肥＋40％紫云英处理的产量最高，达8052．0 kg／hm2，其次为80％化肥＋20％紫云英处理，为7953．0 kg／hm2，增产率分别为31．67％、30．05％；60％化肥＋40％紫云英处理的经济效益最高，产值达17715．0元／hm2，收益也最高，达16239．0元／hm2，比CK增收2785．5元／hm2；以80％化肥＋20％紫云英处理的养分积累总量最大，N、P2O5、K2O的积累总量分别为183．0、79．5、241．5 kg／hm2。[结论]综合分析，60％化肥＋40％紫云英处理的效果最好，有利于提高早稻产量和增加收益。
Abstract
Objective] The aim was to determine the appropriate application ratio between Astragalus smicus and chemical fertilizer in early rice production.[Method] With Zhuliangyou 4026 as the test variety, setting up 7 treatments, blank as control, effects of Astragalus smicus and chemical fertilizer on early rice yield and economic benefits were studied , the optimal ratio between Astragalus smicus and chemical fertilizer was selected.[Result] The growth traits of each treatment were better than those of the control group.The plant height and ear length was highest in treatment of 80% chemical fertilizer+20%Astragalus smicus, as 87.1 and 20.9 cm respectively;yield was highest in 60%chemical fertilizer+40%Astragalus smicus, up to 8 052.0 kg/hm2 , yield in 80%chemical fertilizer+20%Astragalus smicus took the second place, output value up to 7 953.0 kg/hm2, yield increasing rate were 31.67%and 30.05%;economic benefit was maximum in 60%chemical fertilizer+40%Astraga-lus smicus, up to 17 715.0 yuan/hm2, profit up to 16 239.0 yuan/hm2 increased by 2 785.5yuan/hm2 compared with CK;nutrient accumulation was maximum in 80% chemical fertilizer+20% Astragalus smicus, N, P2 O5 , K2 O were 183.0, 79.5, 241.5 kg/hm2 respectively.[ Conclu-sion] 60% chemical fertilizer and 40% Astragalus smicus had the best effect, which is conductive to improving early rice yield and income.
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