不同施肥处理对孜然(Cumunum cyminum L.)植株养分吸收和籽粒产量的影响

Effects of Different Fertilizer Treatments on Nutrient Uptake and Seed Yield of Cumunum cyminum L.

采用三因素四水平完全实施方案,进行田间小区试验,研究了不同施肥处理对孜然氮磷钾养分吸收量和产量的影响。结果表明,T10(N2P2K3)处理在生育初期和中期均能明显提高孜然对养分的吸收量,吸氮量和吸钾量均达到最大值,虽然后期对养分的吸收量很小,而T10处理籽粒产量为1 523.55 kg/hm2,籽粒产量最高处理T7(N2P3K2)为1 537.2 kg/hm2,与T10处理差异不显著。因此,最适合于当地孜然生长的施肥处理组合是T10,即施氮75.0 kg/hm2,磷112.5 kg/hm2,钾112.5 kg/hm2,这一施肥配比较好的促进了孜然对氮磷钾养分的吸收,同时又能获得较高的籽粒产量。

Field plot experiments were carried out by using a complete project of three factors and four levels to study the effects of different fertilization treatments on nutrient uptake of nitrogen,phosphorus and potassium and yield of Cumunum cyminum L.The results showed that T10（N2P2K3） treatment could significantly improve the nutrient uptake of Cumunum cyminum L.in the first and middle growth periods.The uptake of nitrogen and potassium both could reach the maximal value.Although the nutrient uptake was small in the later growth period,the yield of kernel treated with T10was 1 523.55 kg/hm2,the highest kernel yield with T7treatment（N2P3K2） was 1 537.20 kg/hm2,which was not significantly different from T10 treatment.So the best fertilization treatment combination suitable to the local production was T10,namely,fertilization of nitrogen was 75.0 kg/hm2,phosphorus was 112.5 kg/hm2 and patassium was 112.50 kg/hm2.The fertilization combination could much improve the uptake of mitrogen,phosphorus and potassium of Cumunum cyminum L.and its kernel yield.