【摘要】 通过对冬小麦施加一种以秸秆为主要原料研制的新型土壤改良剂(简称PJG),采用田间试验,探讨其对冬小麦生长、产量、各生长期养分含量及氮、磷累积吸收量的影响。结果表明:施加PJG土壤改良剂能提高小麦地上部各生长期干物质累积量,单施可提高8.4%,与氮肥配施可提高37.8%;可增加植株地上部各器官中氮、磷含量及其累积吸收量,但对钾素影响不大。施加1 500 kg/hm2的PJG改良剂,能较对照增产1.90%,与氮肥配施效果更佳,最高增产9.96%。综合考虑,应用PJG土壤改良剂时应与适量的氮肥配施,对作物的生长和产量的提高效果更佳。更多还原

【Abstract】 Application for the new soil conditioner that mainly material was straws(PJG for short) in the wheat field;this experiment was carried out to study the influence of PJG on the growth,yield,nutrient concentration in different growth stages,and accumulation of N,P.The results showed that the used of PJG can improve accumulation of dry matter of winter wheat during growing stages,single application of PJG can increase 8.4%,it was mixed with N fertilizer,it was increased 37.8%;applying of PJG also can raise N,P concentration and amount of N,P absorption in shoots of winter wheat,but K was influenced unobvious by PJG.The yield was advanced at 1.90% when soil conditioner of PJG was used at 1 500 kg/hm2 in wheat field,when the combined application of PJG and nitrogen fertilizer,the yield was increased even more obviously reached 9.96%.By comprehensive consideration,coupling of PJG and appropriate amount of nitrogen fertilizer has a better effect on wheat growth and yield.更多还原