锌肥与复肥配施对水稻产量和品质的效应

在四川盆地紫色土上,研究不同阴离子形态锌肥与三元化成复肥配施及3种单质锌肥对水稻产量、品质和养分吸收的影响。结果表明,适宜比例的硫酸锌和硝酸锌与三元化成复肥配施提高了有效穗、株高、穗长和千粒重,增产稻谷12.3%。ZnSO4,Zn(NO3)2合理配比与三元化成复肥配施促进了水稻对N,P,K的吸收,增加了N,K养分向籽粒的转运率,明显提高了水稻对Zn的吸收和利用效率,并有利稻米中蛋白质和淀粉的积累。适宜肥料用量为三元化成复肥2.0g/盆,ZnSO4·7H2O77mg/盆,Zn(NO3)2203mg/盆。在三元化成复肥基础上施用单一形态锌肥,对产量和品质的效应为Zn(NO3)2>ZnSO4>ZnCl2。

THE EFFECT OF COMBINED APPLICATION OF VARIOUS ANIONIC FORMS ZINC AND THREE NUTRIENT COMPOUND FERTILIZERS ON THE YIELD AND QUALITY OF RICE

Various anionic forms Zinc and three nutrient compound fertilizer were used in the purple soil of Sichuan Basin in order to study the effect of combined application of these various anionic forms Zinc and three nutrient compound fertilizers on the yield, quality and nutrient absorption of rice. The results showed that the yield of rice was increased by 12.3% with the respective increases of effective spikes, plant height, spike length and weight of kilo grain because of the application of optimum rate of ZnSO 4, Zn(NO 3) 2 and three nutrient compound fertilizers. The combined application not only helped the absorption of N, P, K and Zn and in transferring N, K to the rice grain but also increased the protein and starch content in the rice grain. The optimum combination of three nutrient compound fertilizer and ZnSO 4 and Zn(NO 3) 2 is 2.0 g/pot, 77 mg/pot and 203 mg/pot. The effect of application of Zinc fertilizers and three nutrient compound fertilizer is Zn(NO 3) 2>ZnSO 4>ZnCl 2.