Effects of foliar spraying potassium-containing organic water-soluble fertilizer on rapeseed growth and yield

doi:10.19802/j.issn.1007-9084.2021303

Abstract

Abstract:

To improve the seed yield, foliar spraying of potassium fertilizer was studied to explore the effect of potassium-containing organic water-soluble fertilizer on rapeseed growth and yield. Cultivar Wangchengyou 8 was used as material, with 3 spraying periods （seedling, early bloom stage, seedling + early bloom stage） and 5 potassium-containing organic water-soluble fertilizer application rates （0, 375, 750, 1125, 1500 g） treatments. Two-factor randomized block test was designed. Results showed that, after spraying 750 g potassium-containing organic water-soluble fertilizer at rapeseed seedling or early bloom stage, growth and development indexes （including plant height, root neck thickness, and biomass） were significantly increased. And spraying twice at seedling and early bloom stage had a more significant impact on growth and development than spraying at a single period. Spraying 750 g per hectare at both seedling and early blooming increased the number of effective siliques per plant and seeds number per silique. An increase of 39.07% on seed yield and 44.22% on oil production per hectare were also observed compared with control. By spraying 750 g per hectare at seedling and early blooming stages, plant growth, yield, seed oil, and economic benefits could be significantly increased.

Key words: rapeseed （Brassica napus L.）, potassium, potassium-containing organic water-soluble fertilizer, yield, economic benefits

CLC Number:

S143.3

Ya-ping CHEN, Xiao-tian ZHU, Yue HONG, Mao-run ZHOU, Chao ZHENG, Cui-ying WEI, Mei-song ZHOU, Yan YU, Fu-gui ZHANG, Yan-hua KAN, Ke-jin ZHOU. Effects of foliar spraying potassium-containing organic water-soluble fertilizer on rapeseed growth and yield[J]. CHINESE JOURNAL OF OIL CROP SCIENCES, 2023, 45(1): 131-137.

Figures/Tables 5

Fig. 1

Table 1

Table 2

Table 3

Table 4

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喷施时期和用量		根颈粗 /mm Rhizome diameter			株高 /cm Plant height			绿叶数 Green leaves		总叶数 Total leaf number		SPAD
Spray periods and amounts		S	F	M	S	F	M	S	F	S	F	S	F
CK		4.64c	10.38cde	11.48ef	24.12a	134.64cdef	138.82cdef	5.2a	24.2c	6.6a	26.0cde	35.42b	47.78efg
苗期 S	375	5.09b	10.70cde	12.10de	25.04a	135.96bcde	141.02bcde	5.8a	25.0bc	6.4a	26.6cde	35.07bc	48.76cdefg
	750	6.36a	12.00bc	13.23cd	25.02a	143.44ab	149.16ab	6.2a	34.4a	7.0a	35.6ab	39.38a	51.68bc
	1125	4.42d	9.47de	10.46f	23.92a	129.91def	134.86def	5.6a	22.6c	6.4a	22.0de	34.50c	47.20fg
	1500	3.92e	8.78e	10.16f	23.44a	127.05f	130.24f	5.8a	21.8c	6.4a	22.2de	32.28d	46.62fg
初花期 F	375		11.32cd	13.14cd		138.38bcd	144.10bcd		24.6c		25.0de		50.48bcde
	750		13.79ab	15.43b		149.60a	157.96a		32.0ab		34.2bc		53.08ab
	1125		10.82cde	12.50de		132.33cdef	138.38cdef		20.6c		23.4de		49.66cdef
	1500		9.39de	11.28ef		129.58ef	134.64def		19.8c		20.e		47.90defg
苗期+初花期 SF	375	5.18b	12.31bc	14.27bc	24.73a	134.75cdef	141.46bcde	5.9a	26.6bc	6.5a	29.2bcd	35.16bc	51.06bcd
	750	6.32a	15.20a	17.28a	25.12a	140.36bc	146.52bc	6.1a	37.6a	6.9a	43.2a	39.74a	56.24a
	1125	4.55cd	11.87bc	13.17cd	25.08a	130.24def	133.76ef	5.7a	24.4de	6.5a	24.de	34.53bc	46.44g
	1500	3.94e	9.62de	11.45ef	23.66a	126.72f	129.36f	5.6a	22.6de	6.3a	25.4de	32.32d	46.02g

喷施时期和用量Spray periods and amounts		单株有效分枝数 Effective branch	主花序有效角果 Effective main inflorescence	单株有效角果 Silique per plant	千粒重 /g TSW	每角粒数 Seeds per silique	小区实产 /（kg /10 m²） Cell production	折合产量 /（kg/hm²）Equivalent output
CK		5.2a	51.0bcd	148.6bcde	3.70a	21.37cde	1.75defg	1745.5defg
S	375	5.6a	51.4bcd	153.6bcde	3.79a	22.37bcd	1.87cdef	1870.0cdef
	750	6.4a	55.8abc	168.6bcd	3.78a	24.00abc	1.94cd	1935.0cd
	1125	5.4a	49.2bcd	144.6bcde	3.79a	20.76de	1.80def	1800.0def
	1500	4.8a	46.6cd	127.4de	3.71a	19.17e	1.53gh	1533.0gh
F	375	5.6a	53.8abc	168.8bcd	3.80a	22.84bcd	1.93cd	1932.5cd
	750	6.2a	57.4ab	186.2b	3.81a	24.77ab	2.05bc	2048.5bc
	1125	5.4a	52.4bcd	165.6bcd	3.80a	21.51cde	1.89cde	1890.0cde
	1500	5.2a	47.4bcd	142.2cde	3.78a	20.58de	1.65fgh	1652.5fgh
SF	375	6.0a	55.8abc	185.2bc	3.73a	24.3abc	2.21ab	2212.5ab
	750	6.2a	63.6a	236.2a	3.82a	26.67a	2.43a	2427.5a
	1125	4.8a	47.4bcd	129.2de	3.69a	21.93bcde	1.71efg	1705.0efg
	1500	5.2a	42.6d	110.4e	3.67a	20.40de	1.46h	1455.0h

喷施时期和用量 Spray periods and amounts		蛋白质含量 /% Protein content	含油量 /% Oil content	产油量 /（kg/hm²） Oil production
CK		19.02bc	38.87b	678.48b
S	375	19.14bc	39.33ab	735.47ab
	750	19.55b	39.51ab	764.52ab
	1125	18.99bc	38.93b	700.74b
	1500	18.45bc	39.00b	597.87b
F	375	19.15bc	39.79ab	768.94ab
	750	19.35bc	39.89ab	817.15ab
	1125	19.04bc	38.90b	735.21b
	1500	19.05bc	38.87b	642.33b
SF	375	19.20bc	39.64ab	877.04ab
	750	20.79a	40.31a	978.50a
	1125	19.02bc	38.91b	663.42b
	1500	18.34c	38.96b	566.87b

喷施时期和用量 Spray periods and amounts		菜籽产量 /（kg/hm²） Rapeseed yield	菜籽单价 /（yuan/kg） Unit price of rapeseed	产值 /（yuan/hm²） Output	成本投入 /（yuan/hm²） Input	产投比 Input-output ratio	经济效益 /（yuan/hm²） Economic benefits
CK		1745.5	5.7	9949.35	4500.0	2.21	5449.35h
S	375	1870.0	5.7	10 659.00	4612.5	2.31	6046.50f
	750	1935.0	5.7	11 029.50	4725.0	2.33	6304.50e
	1125	1800.0	5.7	10 260.00	4837.5	2.12	5422.50i
	1500	1533.0	5.7	8738.10	4950.0	1.77	3788.10l
F	375	1932.5	5.7	11 015.25	4612.5	2.39	6402.75d
	750	2048.5	5.7	11 676.45	4725.0	2.47	6951.45c
	1125	1890.0	5.7	10 773.00	4837.5	2.23	5935.50g
	1500	1652.5	5.7	9419.25	4950.0	1.90	4469.25j
SF	375	2212.5	5.7	12 611.25	4725.0	2.67	7886.25b
	750	2427.5	5.7	13 836.75	4950.0	2.80	8886.75a
	1125	1705.0	5.7	9718.50	6175.0	1.57	4543.50k
	1500	1455.0	5.7	8293.50	6400.0	1.30	2893.50m

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