探明绥江半边红李炭疽病为害程度及病原菌的种类,可为李树炭疽病的防控提供依据。以绥江县2个主要种植区会仪镇和新滩镇的6个半边红李果园为研究对象,对炭疽病为害状况进行了调查,并对炭疽病原菌进行分离保存;利用病原菌分生孢子形态及...探明绥江半边红李炭疽病为害程度及病原菌的种类,可为李树炭疽病的防控提供依据。以绥江县2个主要种植区会仪镇和新滩镇的6个半边红李果园为研究对象,对炭疽病为害状况进行了调查,并对炭疽病原菌进行分离保存;利用病原菌分生孢子形态及核糖体ITS序列对绥江半边红李树炭疽病致病菌进行了种类鉴定和分析。病害调查表明,新滩镇比会仪镇的危害程度严重。单孢分离获得15株分离株,各分离株平板菌落形态略有差异,获得4类不同的分生孢子,经回接验证均致病。rDNA ITS序列系统进化分析初步推定半边红李炭疽病的病原菌为胶孢炭疽复合群(Colletotrichum gloeosporioides species complex)和暹罗炭疽复合群C. siamense species complex。该研究探查了半边红李炭疽病的为害状况,获得了李炭疽菌的单胞分离菌株,初步鉴定了半边红李炭疽菌归属的复合群。展开更多
[Objective] To provide scientific guidance for corn production in Suijiang County of Yunnan Province, explore the best recommended fertilization of corn, and provide a scientific basis for formulating the formula fert...[Objective] To provide scientific guidance for corn production in Suijiang County of Yunnan Province, explore the best recommended fertilization of corn, and provide a scientific basis for formulating the formula fertilization of corn in Suijiang County. [Method] Through carrying out "3414" corn field fertilizer efficiency experiment in Suijiang County, with the help of "3414" field experiment design and data analysis management system" software, the ternary quadratic and one-variable quadratic fertilizer efficiency equations on corn yield were analyzed. [Result] The optimum fertilization scheme for corn in the region was as follows: when pure N, pure P2O5 and K2O were respectively 244.38, 58.75 and 107.38 kg/hm^2, the the obtained best yield of corn was 6 975.60 kg/hm^2, and the maximum benefit was 16 888.58RMB/hm^2. [Conclusion] The reasonable formula of N, P and K fertilizers can not only improve the yield of corn, but also increase economic benefit, having certain reference significance to the development of formula fertilization of corn in Suijiang County.展开更多
文摘探明绥江半边红李炭疽病为害程度及病原菌的种类,可为李树炭疽病的防控提供依据。以绥江县2个主要种植区会仪镇和新滩镇的6个半边红李果园为研究对象,对炭疽病为害状况进行了调查,并对炭疽病原菌进行分离保存;利用病原菌分生孢子形态及核糖体ITS序列对绥江半边红李树炭疽病致病菌进行了种类鉴定和分析。病害调查表明,新滩镇比会仪镇的危害程度严重。单孢分离获得15株分离株,各分离株平板菌落形态略有差异,获得4类不同的分生孢子,经回接验证均致病。rDNA ITS序列系统进化分析初步推定半边红李炭疽病的病原菌为胶孢炭疽复合群(Colletotrichum gloeosporioides species complex)和暹罗炭疽复合群C. siamense species complex。该研究探查了半边红李炭疽病的为害状况,获得了李炭疽菌的单胞分离菌株,初步鉴定了半边红李炭疽菌归属的复合群。
基金Supported by Subsidy Project of Soil Testing and Fertilizer Recommendation by Ministry of Agriculture of the People’s Republic of China(Nong Ban Cai〔2012〕42,Yun Nong Cai〔2012〕29)~~
文摘[Objective] To provide scientific guidance for corn production in Suijiang County of Yunnan Province, explore the best recommended fertilization of corn, and provide a scientific basis for formulating the formula fertilization of corn in Suijiang County. [Method] Through carrying out "3414" corn field fertilizer efficiency experiment in Suijiang County, with the help of "3414" field experiment design and data analysis management system" software, the ternary quadratic and one-variable quadratic fertilizer efficiency equations on corn yield were analyzed. [Result] The optimum fertilization scheme for corn in the region was as follows: when pure N, pure P2O5 and K2O were respectively 244.38, 58.75 and 107.38 kg/hm^2, the the obtained best yield of corn was 6 975.60 kg/hm^2, and the maximum benefit was 16 888.58RMB/hm^2. [Conclusion] The reasonable formula of N, P and K fertilizers can not only improve the yield of corn, but also increase economic benefit, having certain reference significance to the development of formula fertilization of corn in Suijiang County.