侧深施氮对机插水稻产量形成及氮素利用的影响

朱从桦,张玉屏,向镜,张义凯,武辉,王亚梁,朱德峰,陈惠哲

Effects of Side Deep Fertilization on Yield Formation and Nitrogen Utilization of Mechanized Transplanting Rice

CongHua ZHU,YuPing ZHANG,Jing XIANG,YiKai ZHANG,Hui WU,YaLiang WANG,DeFeng ZHU,HuiZhe CHEN

表5 机械侧深施氮对水稻氮素转移的影响

Table 5 Effects of mechanized side deep placement of nitrogen fertilizer on nitrogen transport of rice

年份 Year	试验处理 Treatment	茎叶氮素表观转移量 TNT (kg·hm^-2)	茎叶氮素表观转移率 TNTE (%)	茎叶转移的氮对籽粒氮的贡献率 NCR (%)	茎鞘Stem-sheath		叶 Leaf
年份 Year	试验处理 Treatment	茎叶氮素表观转移量 TNT (kg·hm^-2)	茎叶氮素表观转移率 TNTE (%)	茎叶转移的氮对籽粒氮的贡献率 NCR (%)	SNT (kg·hm^-2)	SNTE (%)	LNT (kg·hm^-2)	LNTE (%)
2017	N0	40.18d	74.93a	64.56b	16.06c	69.67a	24.12d	78.92a
	CUB	49.01c	63.77b	56.96c	18.65c	57.56b	30.36c	68.20b
	CUM	57.50b	61.87bc	60.59b	22.31b	53.04c	35.19b	69.12b
	CRUB	68.97a	63.11bc	70.90a	25.66a	54.46bc	43.31a	69.61b
	CRUM	74.62a	61.46c	72.99a	27.13a	51.98c	47.49a	68.62b
2018	N0	32.50b	52.36a	53.25a	16.84ab	48.02a	15.66b	58.03a
	CUB	27.60c	35.21c	30.60b	11.74c	26.13b	15.86b	47.55b
	CUM	38.54a	40.12b	33.45b	19.71a	34.55b	18.82a	48.42b
	CRUB	33.24b	37.65bc	30.35b	15.16bc	30.00b	18.08ab	47.75b
	CRUM	39.51a	39.43bc	28.41b	19.70a	33.29b	19.81a	48.26b