沙埋对河西走廊荒漠绿洲过渡带一年生草本植物的影响

宋冰, 王国华, 缑倩倩, 席璐璐

Effects of sand-buried on annual herbaceous plants in desert-oasis ecotone of Hexi Corridor Gansu， China

Bing Song, Guohua Wang, Qianqian Gou, Lulu Xi

表1 不同沙埋深度下4种一年生草本植物的繁殖体质量（百粒重）和数量（结种量）

Table 1 Propagation quality (the weight of 100 diaspore) and quantity (seed production) of four annual herbaceous plants under different sand burial depths

科	种	沙埋深度/cm	百粒重/mg	每株结种量/粒
禾本科 (Gramineae)	狗尾草 (Setaria viridis)	0	20.0±5.4^a	38.7±10.4^a
		1	26.9±5.3^a	75.8±23.1^ab
		2	22.6±7.9^a	109.7±32.9^b
		3	41.9±10.5^b	115.6±33.4^b
		5	24.7±2.4^a	108.9±21.3^b
		10	19.6±6.8^a	105.8±36.6^b
	虎尾草 (Chloris virgate)	0	12.0±3.1^a	170.8±44.4^b
		1	30.9±7.0^bc	214.2±48.7^b
		2	27.2±9.3^bc	410.8±54.1^c
		3	36.5±5.7^c	366.2±57.7^c
		5	20.0±3.5^ab	32.0±5.5^a
藜科 (Chenopodiaceae)	白茎盐生草 (Halogeton arachnoideus)	0	—	—
		1	—	—
		2	—	—
		3	—	—
	雾冰藜 (Bassia dasyphylla)	0	42.9±14.6^ab	11.7±4.7^a
		1	67.4±13.1^b	56.6±19.4^b
		2	71.5±21.8^b	174.2±37.4^c
		3	63.7±17.6^ab	69.8±20.2^b
		5	35.2±6.1^a	66.0±11.4^b