This study was to find out the suitable application amount of plant-derived humic acid organic fertilizer for selenium-rich rice production in northern Guilin area by applying the fertilizer at different amounts.The r...This study was to find out the suitable application amount of plant-derived humic acid organic fertilizer for selenium-rich rice production in northern Guilin area by applying the fertilizer at different amounts.The results showed that plant-derived humic acid organic fertilizer could effectively activate selenium in selenium-rich soil,and then promote the uptake of selenium by rice.With costs,selenium enrichment and rice yield as the main evaluation indicators,A4 was chosen as the best treatment,that is,the application of 4 500 kg/hm^2 of plant-derived humic acid organic fertilizer as base fertilizer could achieve the best benefit.展开更多
基金Supported by the Special Fund for the Construction of Guangxi Innovation Team of China Agriculture Research Systemthe Agricultural Key Science and Technology Project of Guangxi(201621,201604)+6 种基金the Program for the Scientific Research and Technology Development in Guangxi(Guike AD16380194)the Special Fund for the Innovation-Driven Development in Guangxi(Guike AA17202026)the Key Research and Development Program of Guangxi(Guike AB16380207)the Science Research and Technology Development Program of Guilin City(2016011202,20170116-4)the Science Research and Technology Development Program of Nanning City(20165370)the Special Fund for the Collaborative Innovation of Fundamental Research,Guangxi Academy of Agricultural Sciences(Guinongke 2017YZ03)the Fund for Science and Technology Development of Guangxi Academy of Agricultural Sciences(2017JM07)
文摘This study was to find out the suitable application amount of plant-derived humic acid organic fertilizer for selenium-rich rice production in northern Guilin area by applying the fertilizer at different amounts.The results showed that plant-derived humic acid organic fertilizer could effectively activate selenium in selenium-rich soil,and then promote the uptake of selenium by rice.With costs,selenium enrichment and rice yield as the main evaluation indicators,A4 was chosen as the best treatment,that is,the application of 4 500 kg/hm^2 of plant-derived humic acid organic fertilizer as base fertilizer could achieve the best benefit.
文摘在茶园进行施用腐植酸有机肥试验,研究不同施肥量和施肥次数对茶叶产量、百芽重、芽头密度和土壤理化性状的影响,结果表明:随腐植酸肥用量的增加,茶叶产量随之增加,增产幅度为4.32%~12.62%,施用腐植酸肥可增加茶树的芽头密度和百芽重,且分次施用比单次施用增产效果不显著;施用腐植酸肥对提高土壤pH的效果较好,提高幅度为4.50%~14.19%;建议每667 m2一次性施用腐植酸肥40 kg.