Title: Present Situation,Problems and Countermeasure of Applying Fertilizer to Rapeseed of Major Rapeseed-producing Areas in the Central Hubei Province
Abstract: To evaluate the differences in fertilizing method in rapeseed(Brassica campestris L.)with different yields, an investigation of nutrients management on rapeseed in 2011 and 2012 was carried out in Shayang county of the central Hubei province.It covered 268 rapeseed farmers distributed from main product area, and provide basis for establishment of rational fertilization management. The survey indicated that the average rapeseed yield was 2 350 kg / hm2, and the average applications of N,P2O5,and K2 O fertilizer were 211,67 and 54 kg / hm2.In low-yield areas(2 000 kg / hm2),the average applications of N,P2O5,and K2 O fertilizer were 168,48 and 40 kg / hm2,respectively.The inputs of N,P and K fertilizers were insufficient;the basal / topdressing ratio of N was unbalanced;these were major constrain factors of higher rapeseed yields in low-yield areas.In middle-yield areas(2 000~3 000 kg / hm2),the average applications of N,P2O5,and K2 O fertilizer were 201,66 and 55 kg /hm2,respectively.The main problem was the P fertilizer and K fertilizer and the N applied as basic was used sufficient. In high-yield areas(3 000 kg / hm2),the average applications of N,P2O5,and K2 O fertilizer were 249,91 and 79 kg / hm2,respectively.The total nutrient inputs and the N applied as basic were used sufficiently.The times of fertilizer application were increased. Consequently,it was important to pay attention to the use of P,K fertilizer and reasonable application of N fertilizer and the basal / topdressing ratio of N should be balanced,and then achieve high yield in rapeseed production in the central Hubei province.
Publication Year: 2015
Publication Date: 2015-01-01
Language: en
Type: article
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