中国半干旱区农田土壤碳、氮、磷含量对玉米生产的影响

胡延斌, 张强, 肖国举, 仇正跻, 李永平, 郭占强

Effect of soil carbon， nitrgen and phosphate contents on maize production in semi-arid regions of China

Yanbin Hu, Qiang Zhang, Guoju Xiao, Zhengji Qiu, Yongping Li, Zhanqiang Guo

表3 土壤有机碳对玉米品质的影响

Table 3 Effects of soil organic carbon on maize quality

土壤有机碳 /(g·kg^-1)	籽粒有机碳 /(g·kg^-1)	全氮 /(g·kg^-1)	全磷 /(g·kg^-1)	蛋白质 /(g·kg^-1)	淀粉 /(g·kg^-1)	脂肪 /(g·kg^-1)	可溶性糖 /(mg·kg^-1)
3.00—4.00	388.71±2.67^e	12.15±2.67^d	1.90±0.24^c	70.49±11.00^d	491.61±89.79^e	25.28±2.88^e	114.30±7.30^e
4.00—5.00	401.51±3.28^e	12.83±2.31^d	2.84±1.07^b	70.95±1.12^d	557.99±47.53^d	25.64±2.88^e	116.90±4.90^e
5.00—6.00	429.49±16.23^d	15.14±1.91^c	3.36±1.04^b	72.05±4.08^d	651.16±45.44^cd	26.78±1.81^e	155.20±28.40^d
6.00—7.00	442.47±13.87^d	17.40±2.30^b	4.09±0.72^a	105.11±13.29^c	668.42±25.42^c	27.72±1.46^e	167.60±17.30^cd
7.00—8.00	466.62±8.70^d	19.95±1.76^a	3.67±0.39^b	113.20±11.34^bc	674.43±15.62^c	27.76±0.86^e	175.40±14.90^c
8.00—9.00	467.86±11.96^d	20.80±2.40^a	2.99±0.46^b	114.35±17.08^b	675.89±33.15^c	30.24±1.68^de	181.20±15.40^bc
9.00—10.00	499.74±29.51^c	18.12±1.54^a	2.88±0.45^b	114.43±9.18^b	686.55±11.10^c	33.80±2.39^cd	191.00±17.00^b
10.00—11.00	509.32±20.06^bc	17.33±1.25^b	2.87±0.35^b	115.28±9.30^b	707.46±5.85^b	36.99±0.60^bc	191.10±13.70^b
11.00—12.00	517.05±1.09^b	17.02±0.25^b	2.70±0.38^b	123.94±20.71^a	709.51±27.38^b	38.33±0.67^ab	241.10±37.80^a
12.00—13.00	557.67±77.82^a	16.71±1.10^c	2.61±0.49^b	124.86±20.18^a	748.05±19.98^a	39.67±1.67^a	247.70±39.90^a
平均	473.09±6.80	18. 35±0.78	3.42±0.19	103.28±4.92	666.39±8.41	30.88±0.62	163.10±7.90