Scientia Agricultura Sinica ›› 2020, Vol. 53 ›› Issue (10): 2034-2044.doi: 10.3864/j.issn.0578-1752.2020.10.010

• SOIL & FERTILIZER·WATER-SAVING IRRIGATION·AGROECOLOGY & ENVIRONMENT • Previous Articles     Next Articles

Investigation of Present Fertilization Status and Fertilizer Utilization Rate on Rapeseed in Anhui Province

BU RongYan1,2,CHENG Yi3,WANG Hui1,2,HAN Shang1,2,HU RongGen3,YU Zhong3,LI Min1,2,CHENG WenLong1,2,SUN YiXiang1,2,WANG JiaBao1,2,WU Ji1,2()   

  1. 1 Institute of Soil and Fertilizer, Anhui Academy of Agricultural Sciences, Hefei 230031
    2 Anhui Key Laboratory of Nutrient Cycling, Resources and Environment, Hefei 230031
    3 Anhui Soil and Fertilizer Station, Hefei 230031
  • Received:2019-08-01 Accepted:2019-10-08 Online:2020-05-16 Published:2020-05-22
  • Contact: Ji WU E-mail:wuji338@163.com

Abstract:

【Objective】 Winter rapeseed is an important oil crop in China, while the rational scientific fertilization is a crucial measure to ensure the yield of winter oilseed rape. Understanding the current situation and existing problems of fertilization in winter rapeseed planting areas of Anhui Province is important to guide rational fertilization. 【Method】Taking winter oilseed rape planting in Anhui Province as example, this study was conducted from farmers in the main winter rape producing areas from 2017 to 2018. The survey included fertilizer varieties, fertilizer usage, fertilization methods and proportion, planting area, and yield level. Based on the survey results, the current fertilization status of winter rape growing areas in Anhui Province was analyzed by Cate-Nelson method to evaluate the yield efficiency of winter rapeseed in Anhui Province, and the main methods to increase yield and efficiency of winter rapeseed in Anhui Province were explored.【Result】The results showed that chemical fertilizers were applied in all farmlands, only 59.0% farmers used organic matter. The results showed that the average yield of winter oilseed rape in Anhui Province was 2 017 kg·hm-2, and the average nitrogen (N), phosphorus (P2O5) and potassium (K2O) fertilizers were 160, 63, and 65 kg·hm-2, respectively. To sum up, the average use of N, P2O5 and K2O fertilizers becomes more reasonable, however, the results of fertilizer grading show that the phenomenon of either insufficient or excessive use of N, P2O5 and K2O fertilizers does exist. The fertilizer is mainly distributed by hand, as the mechanized fertilization is not prevalent. Cate-Nelson method (cross-over method) was used to evaluate the energy production efficiency of winter rapeseed in Anhui Province, the results showed that only 23.8%, 20.2% and 21.0% farmers of winter rapeseed in Anhui Province achieved high yield and high efficiency of N, P2O and K2O fertilizers. This indicated there was still much room for increasing yield and efficiency of rapeseed in Anhui Province. 【Conclusion】 Referring to the current recommended amount of rapeseed fertilizer, the average amount of chemical fertilizer in winter rapeseed cultivation in Anhui Province became more rational, but did not enough in fertilization methods, nutrient management and organic substitution. Therefore, it needed to take measures to increase of fertilizer efficiency by controlling the total amount, increasing organic fertilizer substitution, promoting the application of special fertilizer, rational nutrient management, encouraging the mechanized fertilization, and so on, to finally achieve high yield of rapeseed yield.

Key words: winter rapeseed, fertilization status, fertilizer utilization rate, Cate-Nelson method, Anhui Province

Fig. 1

Distribution map of experiment site(n=400)"

Table 1

The type and percentage of fertilizer applied in winter rapeseed during 2017-2018"

肥料品种
Type of fertilizer
肥料种类
The type of fertilizer
基肥Base fertilizer 追肥Additional fertilizer
样本数 Sample 比例 Percent (%) 样本数 Sample 比例 Percent (%)
化肥
Chemical fertilizer
尿素Urea 41 10.3 367 91.8
过磷酸钙Super Phosphate 8 2.0 0 0.0
氯化钾Potassium chloride 2 0.5 10 2.5
复合肥Compound fertilizer 368 92.0 78 19.5
有机肥
Organic matter
粪肥Night soil 24 6.0 0 0.0
饼肥Rapeseeds cake 3 0.8 0 0.0
绿肥Green manure 3 0.8 0 0.0
商品有机肥Commercial organic fertilizer 8 2.0 0 0.0
秸秆 Crop straw 196 49.0 0 0.0
总计
Total
单施化肥Total chemical fertilizer 163 40.8 0 0.0
单施有机肥Total organic matter fertilizer 0 0.0 0 0.0
化肥+有机肥Chemical + organic matter fertilizer 233 58.3 0 0.0

Table 2

Nutrient application rates in winter rapeseed of different regions during 2017-2018"

地点
Site
指标
Index
N P2O5 K2O 总计
In all
养分比例
Nutrition proportion
沿江
Yanjiang (166)
变幅Rang (kg·hm-2) 0-383 0-138 0-150 0-525 1﹕0.43﹕0.46
均值Mean (kg·hm-2) 149 64 69 285
变异系数CV (%) 36.1 41.3 41.3 32.7
江淮
Jianghuai (50)
变幅Rang (kg·hm-2) 27-345 0-113 0-113 68-499 1﹕0.32﹕0.32
均值Mean (kg·hm-2) 188 61 61 310
变异系数CV (%) 37.8 43.7 43.6 27.2
皖南
Wannan (184)
变幅Rang (kg·hm-2) 4-390 0-240 0-197 7-591 1﹕0.37﹕0.37
均值Mean (kg·hm-2) 164 61 60 285
变异系数CV (%) 30.6 41.9 43.0 28.3
全省
Whole Province (400)
变幅Rang (kg·hm-2) 0-390 0-240 0-197 0-591 1﹕0.39﹕0.41
均值Mean (kg·hm-2) 160 63 65 288
变异系数CV (%) 41.2 44.8 44.5 30.4

Fig. 2

Distribution of nitrogen, phosphorus and potassium fertilizer in the different winter rapeseed regions in Anhui Province"

Table 3

The investigation of fertilizer application mode of winter rapeseed during 2017-2018"

地点
Site
施肥方式
Way of fertilization
比例
Percent (%)
平均产量
Yield (kg·hm-2)
PFPN
(kg·kg-1)
PFPP
(kg·kg-1)
PFPK
(kg·kg-1)
沿江
Yanjiang (166)
机械machinery 50.5 2242 16.36 45.76 41.52
人工Artifact 49.5 1989 12.75 28.83 26.17
江淮
Jianghuai (50)
机械machinery 27.6 2113 14.09 37.07 37.07
人工Artifact 72.4 1949 9.65 33.03 33.03
皖南
Wannan (184)
机械machinery 27.7 2164 13.12 36.07 36.07
人工Artifact 72.3 1883 11.08 30.87 30.87

Fig. 3

The investigation of fertilizer methods and farming households in winter rapeseed during 2017- 2018"

Table 4

Proportions of winter rapeseed applying chemical fertilizer in different growing season during 2017-2018"

地点
Site
指标
Index
氮肥 N 钾肥 K2O
比例1)
Proportion (%)
基肥
Base fertilizer
追肥
Additional fertilizer
比例1)
Proportion (%)
基肥
Base fertilizer
追肥
Additional fertilizer
沿江
Yanjiang
(166)
变幅Rang (kg·hm-2) 23-155 23-183 42-135 22-75
均值Mean (kg·hm-2) 74 91 60 15
变异系数CV (%) 25.6 32.6 30.9 45.2
93.2 93.2 31.4
江淮
Jianghuai
(50)
变幅Rang (kg·hm-2) 54-209 35-161 0-112
均值Mean (kg·hm-2) 88 98 61
变异系数CV (%) 42 43.1 32.5
100.0 100.0 0
皖南
Wannan
(184)
变幅Rang (kg·hm-2) 3-185 1-276 29-246 7-308
均值Mean (kg·hm-2) 66 98 89 53
变异系数CV (%) 29.1 39.7 37 54.6
100.0 100.0 19.7

Fig. 4

Statistical the relationship between yield of winter rapeseed and nitrogen, phosphorus and potassium fertilizer application rate in different regions in Anhui Province during 2017-2018"

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