稻茬过晚播小麦高产密度和氮肥调控效应分析

张明伟, 丁锦峰, 朱新开, 郭文善

Analysis of High-Yielding Planting Density and Nitrogen Application in Super-Late Sowing Wheat Following Rice

Zhang Mingwei, Ding Jinfeng, Zhu Xinkai, Guo Wenshan

表4 过晚播小麦不同密肥处理间氮肥利用效率的影响（2016-2017）

Table 4 Effects of density and nitrogen on nitrogen use efficiency of super-late sowing wheat (2016-2017)

密度 Density (×10⁴/hm²)	施氮量 N amount (kg/hm²)	氮肥运筹 N ratio	氮肥偏生产力 NFPP (kg/kg)	氮素农学效率 NAE (kg/kg)	氮素生理效率 NPE (kg/kg)	氮素表观利用率 NAR (%)
270	180	4:2:1:3	34.59abc	11.35abcdefg	28.40abc	39.98bcdefgh
		5:1:2:2	35.54abc	12.30abc	28.33abc	43.43abcdefg
		6:0:2:2	35.30abc	12.07abcd	25.96abcd	46.48abcde
	225	4:2:1:3	28.32efg	9.74defgh	27.53abcd	35.36fgh
		5:1:2:2	28.81def	10.22cdefgh	25.45bcd	40.17bcdefgh
		6:0:2:2	28.83def	10.24cdefgh	26.34abcd	38.89bcdefgh
	270	4:2:1:3	24.36g	8.87gh	25.25bcd	35.14gh
		5:1:2:2	24.40g	8.91gh	23.34cd	38.15cdefgh
		6:0:2:2	24.45g	8.96gh	24.07bcd	37.21defgh
330	180	4:2:1:3	36.07abc	11.06abcdefgh	28.20abc	39.23bcdefgh
		5:1:2:2	36.83ab	11.83abcde	25.14bcd	47.05abcd
		6:0:2:2	38.49a	13.49a	29.35ab	45.97abcde
	225	4:2:1:3	31.89cde	11.89abcde	31.55a	37.69defgh
		5:1:2:2	32.63b-e	12.63abc	28.05abcd	45.02abcdef
		6:0:2:2	32.88bcd	12.88ab	27.85abcd	46.25abcde
	270	4:2:1:3	25.87fg	9.21fgh	28.74abc	32.03h
		5:1:2:2	27.13fg	10.47bcdefgh	27.49abcd	38.07cdefgh
		6:0:2:2	27.21fg	10.54bcdefgh	29.33ab	35.95fgh
390	180	4:2:1:3	37.57a	11.72abcde	26.37abcd	44.46abcdefg
		5:1:2:2	38.23a	12.38abc	26.04abcd	47.55abc
		6:0:2:2	38.55a	12.70abc	25.17bcd	50.45a
	225	4:2:1:3	31.98cde	11.30a-h	27.15abcd	41.62abcdefgh
		5:1:2:2	32.02cde	11.34abcdefg	23.37cd	48.53ab
		6:0:2:2	32.21cde	11.53abcdef	24.51bcd	47.06abcd
	270	4:2:1:3	26.05fg	8.82h	23.58bcd	37.39defgh
		5:1:2:2	26.75fg	9.52efgh	23.75bcd	40.10bcdefgh
		6:0:2:2	26.10fg	8.87gh	22.33d	39.73bcdefgh
F
密度Density			40.23^**	19.02^**	31.11^**	18.06^**
施氮量N amount			485.32^**	96.05^**	7.67^**	50.14^**
氮肥运筹N ratio			2.92ns	8.71^**	7.37^**	26.24^**
密度×施氮量Density×N amount			1.97ns	5.45^**	4.03^*	3.11^*
密度×氮肥运筹Density×N ratio			0.61ns	1.82ns	1.26ns	0.88ns
施氮量×氮肥运筹N amount×N ratio			0.37ns	1.10ns	1.23ns	1.29ns
密度×施氮量×氮肥运筹Density×N amount×N ratio			0.17ns	0.51ns	1.48ns	0.38ns