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为研究贵州省园艺所培育的优良夏秋甘蓝新品种黔甘6号在绥阳县的优化施肥参数,采用测土配方施肥项目所给定的“X”动态优化施肥试验设计,开展了氮肥总量控制试验,设置了无氮、70%优化氮、优化氮、130%优化氮4个量级施氮量处理。试验结果:氨用量达到优化氮水平前,产量随氮量增加而明显增加,氨用量增加到130%优化氮水平,产量不再有效增加。建议黔甘6号在绥阳县的氮肥适宜施用总量至少要有10 kg/亩,最佳用量为14 kg/亩左右,此用量再配以P_2O_5 5.6 kg/亩、K_2O 10.3 kg/亩,能满足到黔甘6号丰产栽培优化施肥的需要。
In order to study the optimized fertilization parameters of Qian Gan 6, a new good summer and fall cabbage cultivar cultivated by horticulture in Guizhou Province, using “X” dynamic optimized fertilization experiment design given by soil testing formula fertilization project, In the total amount control experiment, nitrogen-free, 70% nitrogen optimized, nitrogen optimized, and 130% nitrogen optimized nitrogen treatment were set. The results showed that the yield of nitrogen increased obviously with the increase of nitrogen before reaching the optimized nitrogen level. The amount of ammonia increased to 130% and the yield of nitrogen was no longer increased effectively. It is suggested that the total amount of suitable nitrogen fertilizer for Qiangan 6 in Suiyang should be at least 10 kg / mu and the optimum dosage is about 14 kg / mu. This amount should be supplemented by P2O5 5.6 kg / mu and K2O 10.3 kg / mu, To meet the Qiangan 6 high yield cultivation needs of the optimization of fertilization.