论文部分内容阅读
进行红枣不同生育期氮、磷、钾最佳配比试验研究,结果表明:枣树从萌芽到开花多施氮肥,中施磷肥,少施钾肥,氮磷钾配比为1∶0.6∶0.2,可制定配方为N+P2O5+K2O≥45%(25-15-5),每株施1.45 kg;花期到果实膨大期施中量氮、钾肥,多施磷肥,氮磷钾配比为1∶2.1∶0.9,可制定配方为N+P2O5+K2O≥45%(11-23-11),每株施1.34 kg;果实膨大期补施磷钾肥,磷钾配比为1∶1,每株施0.6 kg。
The optimum proportion of nitrogen, phosphorus and potassium in different growth stages of jujube was tested. The results showed that: jujube increased nitrogen fertilizer from sprouting to flowering, phosphorus was applied, potassium was less applied, the ratio of NPK was 1: 0.6: 0.2, The formula can be formulated as N + P2O5 + K2O ≥ 45% (25-15-5), 1.45 kg per plant; flowering to medium fruiting stage medium nitrogen, potash fertilizer, 2.1: 0.9, the formula can be formulated as N + P2O5 + K2O≥45% (11-23-11), each application 1.34 kg; fruit enlargement period to supplement the phosphorus and potassium fertilizer, phosphorus and potassium ratio of 1: 1, 0.6 kg.