摘要
以金乡大蒜为试材,通过氮磷钾配方试验研究覆膜大蒜的养分吸收特点及最佳施肥量与施用方法。结果表明,金乡大蒜生长过程中,吸氮最多,钾次之,磷最少,吸收比例为N∶P2O5∶K2O=1∶0.36∶0.70。氮、钾吸收高峰在鳞茎膨大期,磷吸收高峰在蒜薹伸长期。金乡大蒜施用氮磷钾均有增产效果,最佳施用量为N 436.95 kg/hm2,P2O5213.34 kg/hm2,K2O 336.74 kg/hm2。氮、钾肥施用方法均以2/3底施+1/3追施效果最好。
The "3414" design was used to study the nutrient absorption characteristics and the optimum fertilization amount and method for mulched Jinxiang garlic. The results showed that during the growth of Jinx- iang garlic, the absorption of nitrogen was the most, and then potassium and phosphorus. The absorption ratio of nitrogen, phosphorus and potassium was 1 : 0.36 : 0.70. The absorption peaks of nitrogen and potassium were both in the bulbing period, and the phosphorus absorption peak was in the garlic sprout elongation peri- od. The application of nitrogen, phosphorus and potassium all could increase the garlic yield, and the optimal fertilization amounts were 436.95 kg/hm2 of N, 213.34 kg/hm2 of P205 , and 336.74 kg/hm2 of K20. The best fertilization method of both nitrogen and potassium was 2/3 as base fertilizer and 1/3 for topdressing.
出处
《山东农业科学》
2015年第2期72-74,共3页
Shandong Agricultural Sciences
关键词
金乡大蒜
需肥特点
合理施肥
Jinxiang garlic
Fertilizer characteristics
Retional fertilization