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- Title
湖南省油后直播棉花测土配方施肥指标体系.
- Authors
李飞; 李彩红; 赵瑞元; 梅正鼎; 郭莉莉; 刘冰蕾; 何叔军; 张志刚
- Abstract
To obtain the best amount of fertilizer application and the best ratio of nutrients based on the soil fertility of the experimental site through the field experiment in the hope of providing the basis for the research of scientific fertilization technology of cotton in Hunan Province and also the reference for the research of high-efficiency fertilization technology of direct seeding cotton after oil in other areas of the Yangtze River Basin.【Methods】 In this study, "3414" experimental design was used. “3414” design referred to three factors (N, P and K), four levels and 14 treatments. The 14 treatments were (1)N0P0K0;(2)N0P2K2;(3)N1P2K2;(4)N2P0K2;(5)N2P1K2;(6)N2P2K2;(7)N2P3K2;(8)N2P2K0;(9)N2P2K1;(10) N2P2K3; (11) N3P2K2; (12) N1P1K2;(13)N1P2K1;(14)N2P1K1.【Results】 The results showed that Nitrogen fertilizer rates(N) were 300-350,250-300,200-250,145-200,and 0-145 kg/hm² when soil fertilizer was classified by low,lower,medium,higher and high (AN 30-55,55-110,110-220,220-430 and>430 mg/kg),respectively,phosphorus fertilizer rates (P205) were 120-140,100-120,70-100,50-70,0-50 kg/hm2 (AP 2-4,4-8,8-19,19-43 and>43 mg/kg),while potassium fertilizer rates (K2O) were 270-320,225-270,175-225,125-175,0-125 kg/hm² (AK 25-45,45-80,80-155,155-290 and >290 mg/kg).【Conclusion】 Taking 3750kg/hm² of seed cotton as the target yield, the index of soil available nitrogen, phosphorus and potassium of direct seeding cotton after oiling and the recommended amount of fertilizer were established in Hunan Province.
- Publication
Xinjiang Agricultural Sciences, 2020, Vol 57, Issue 11, p1961
- ISSN
1001-4330
- Publication type
Article
- DOI
10.6048/j.issn.1001-4330.2020.11.001