| Head smut of corn is the main disease, which is more serious along with the cultivated areaincrease year by year in Heilongjiang Province.The yield of many corn varieties dramaticallydecrease because of the Head smut of corn, cause great economic losses. The control method ofWudalianchi city cost more and waste of the human resourse. General farmer friends have notrecognize the fertilizer can have a considerable influence in the Head smut of corn, the rationalfertilization can have effect on the prevention of the Head smut of corn.The view of the fertilizerhave a certain effect on the Head smut of corn, have not been reported yet. In order to control theeffect of in-depth understanding of fertilizer to maize head smut; find the fertilization technologyeffective prevention and control of maize head smut. Three varieties of Maize Head Smut of cornfertilizer. The test research on the Wudalianchi city often planted: regular influence De Meiya No.1, LiHe16, HaiYu No.5, fertilization technology clear and effective control of Maize Head Smut,the best fertilization method, fertilizer type and fertilization, the best ratio of fertilization and so on,draw the following conclusions:1, applying the same dosage and NPK Ratio the same mixing fertilizer was lower than that ofcompound fertilizer to Maize Head Smut disease.Several fertilization mode2, the experimental area the routine, phosphate fertilizer and potash fertilizer as basal manure,urea nitrogen fertilizer, nitrogen phosphorus potassium fertilizer combination for two kinds offertilization methods incidence of Maize Head Smut incidence rate was lower than that of othermethods of fertilization.3, the application of potassium fertilizer is beneficial to reduce the occurrence of maize headsmut. Through the test, can be drawn, decrease the optimum nitrogen phosphorus and potassium ofMaize Head Smut incidence of fertilizer combination for: De Meiya No.1N375kg, P180kg, K190kg, the incidence rate was4.33%,the control is9.00%, the control effect is51.89%;and LiHe16N450kg, P180kg, K190kg, incidence rate of3%,the control is7.00%, the control effect is57.14%;HaiYu5N375kg or450kg180kg, phosphate fertilizer, potash fertilizer is190kg, the incidencerate was2.67%, the control is7.00%, the control effect is61.86%.4, improve the proportion of phosphorus and potassium fertilizer is favorable to reduce themaize head smut, De Meiya No.1using the NPK20-14-12incidence rate of3.33%,the control is9.00%, the control effect is63.00%; and LiHe16using NPK20-14-12incidence rate of3%,2.67%,the control is7.00%, the control effect is61.86%; and HaiYu5, the incidence of NPK24-12-12jade is2.67%,the control is7.00%, the control effect is61.86%.5, the same fertilizer treatments of different maize varieties morbidity differences, applyingmixed fertilizer and compound fertilizer two treatment showed the highest incidence of De MeiyaNo.1, HaiYu5, the lowest rate of jade,To sum up, at the same time, consider the economic costs, in Wudalianchi test area, in order to reduce the incidence of Maize Head Smut rate, should be in accordance with the NPK Ratio ofNPK24-12-12self mixing fertilizer, phosphate fertilizer and potash fertilizer as basal manure, withurea fertilizer, nitrogen phosphorus potassium fertilizer combination for two kinds of fertilizerapplication method of planting Haiyu5varieties.This study focus on the effect of the Maize Head Smut to the corn systematically and thetheory guiding sense. So far, the study has not been reported,which is obviously innovative andhas important practical application. This study that choose the optimal fertilizer combination haveprofound guiding significance for the production of corn... |
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