施石灰和秸秆还田对双季稻田土壤钾素表观平衡的互作效应

刘磊, 廖萍, 邵华, 刘劲松, 杨星莲, 王静, 王海媛, 张俊, 曾勇军, 黄山

Interactive effects of liming and straw return on apparent soil potassium balance in a double rice cropping system

LIU Lei, LIAO Ping, SHAO Hua, LIU Jin-Song, YANG Xing-Lian, WANG Jing, WANG Hai-Yuan, ZHANG Jun, ZENG Yong-Jun, HUANG Shan

表3 施石灰(L)和秸秆还田(RS)对双季稻秸秆还田量和秸秆钾素投入的影响

Table 3 Effects of liming (L) and straw return (RS) on the rate of straw and K input

年份 Year	处理 Treatment	秸秆投入量 Rate of straw returned into field (kg hm^-2)		秸秆钾素投入量 K input through straw return (kg hm^-2)
年份 Year	处理 Treatment	早稻 Early rice	晚稻 Late rice	早稻 Early rice	晚稻 Late rice
2015	秸秆还田 Strew return (RS)	4313 a	4141 b	119 a	179 a
	秸秆还田配施石灰 Strew return combine with liming (L+RS)	4313 a	4822 a	119 a	187 a
2016	秸秆还田Strew return (RS)	5163 a	4415 a	165 a	154 a
	秸秆还田配施石灰 Strew return combine with liming (L+RS)	5830 a	4802 a	170 a	159 a
2017	秸秆还田Strew return (RS)	3879 b	4097 a	137 b	157 a
	秸秆还田配施石灰 Strew return combine with liming (L+RS)	5149 a	4514 a	171 a	155 a
2018	秸秆还田Strew return (RS)	4314 a	4141 a	149 a	161 b
	秸秆还田配施石灰 Strew return combine with liming (L+RS)	4671 a	4261 a	153 a	172 a