曲阜香稻土壤养分调查研究

The Investigation on Soil Nutriention of Fragrant Rice Field in Qutu

为探索曲阜香稻新产区高产优质的合理施肥提供科学依据,我们对其土壤测定了养分状况,并分析了新、老香稻产区土壤养分的差异。

We've carried out a research for soil nutrient of the new and old fragrantrice field(FRF)of QUFU.The results as following:First:The content of the soil organic matter in the old FRF is half as thatof the new FRF,the content of all nitrogen fertilizer,soluble nitrogen to alkaliand the qiuck-acting phosphatic fertilizer of the old FRF are larger than thanthat of the new FRF by one grade.The content of the quick-acting potassiumfertilizer of the old FRF is lager than that of the new FRF by three grades.Secondly:The content of soil effective boron fertilizer in the old FRF islower than that of the critical value(0.5ppm).The new FRF is lacking theboron fertilizer badly below(0.25ppm).The content of molybdenum(Mo)in theFRF is lower than the critical value,and the other trace element(Mn,Cn,Zn,Fe,etc.)in the FRF is higher than the critical value.Thirdly:From above,we can see that we should add more organic fertilizerto the new exploited FRF and adjust the rate of N.P.K.fertilizer,make useof boron fertilizer,so as to regulate the nutrition of the fragrant rice,developthe water source of the newly cultivated FRF and then raise the output and thequality of the fragrant rice.