紫云英与化肥配施对早稻种植效益的影响

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8 052.0 kg/hm~2,其次为80%化肥+20%紫云英处理,为7 953.0 kg/hm~2,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17 715.0元/hm~2,收益也最高,达16 239.0元/hm~2,比CK增收2 785.5元/hm~2;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/hm~2。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。

Effects of Fertilization of Astragalus smicus and Chemical Fertilizer on Early Rice Cultivation Benefits

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.