不同膜上遮挡措施对旱地玉米土壤理化性状及产量的影响

王奇, 扶亚芳, 司雷勇, 金岩, 夏镇卿, 路海东

Effects of different cooling methods on maize soil physical and chemical properties and yield in dryland

WANG Qi, FU Ya-Fang, SI Lei-Yong, JIN Yan, XIA Zhen-Qing, LU Hai-Dong

表3 不同覆盖方式下土壤养分的含量

Table 3 Soil nutrients content under different mulching methods

年份 Year	处理 Treatment	有机质Organic matter (g kg^-1)	全氮 Total nitrogen (g kg^-1)	全磷 Total phosphorus (g kg^-1)	全钾 Total potassium (g kg^-1)	碱解氮 Alkali-hydrolyzale nitrogen (mg kg^-1)	速效磷 Available phosphorus (mg kg^-1)	速效钾 Available potassium (mg kg^-1)
2018	A	16.351 a	0.871 a	0.972 a	14.653 ab	39.733 b	20.568 ab	146.475 b
2018	B	16.251 a	0.858 a	0.998 a	14.956 a	40.268 b	20.348 b	151.160 ab
	C	16.167 a	0.873 a	0.982 a	14.274 b	41.433 a	21.802 a	154.421 a
2019	A	16.131 a	0.862 a	0.982 a	14.406 a	40.500 b	19.450 b	139.650 b
2019	B	16.073 a	0.869 a	0.974 a	14.520 a	39.740 b	20.580 ab	145.500 ab
	C	15.794 b	0.801 b	0.967 a	13.953 b	42.700 a	21.085 a	149.650 a