Effects of maize straw biological reactor instead of chemical fertilizer on physical and chemical properties of soil and yield,quality of watermelon
In order to achieve the coordinated improvement of soil quality,watermelon yield and quality,two treatments:traditional fertilization and maize straw biological reactor partially instead of chemical fertilizer were designed during 2018-2020.The experimental results showed that the straw biological reactor technology could improve the soil quality and increase the yield and quality of watermelon on the basis of reducing the amount of chemical fertilizer(15-15-15)by 375 kg·hm-2 and no application of pesticides compared with conventional cultivation.Compared with original value,straw biological reactor partially instead of chemical fertilizer increased soil organic matter content by 18.8%,while the traditional fertilization treatment resulted in a reduction by 12.4%.Meanwhile,straw biological reactor partially instead of chemical fertilizer could increase the supply of alkali-hydrolyzed nitrogen,reduce the accumulation of available phosphorus and available potassium,and reduce the soil bulk density.Straw biological reactor partially instead of chemical fertilizer could also significantly increase the watermelon yield by 6.8%(6.6%-8.1%)on average.Watermelon protein content was increased by 5.4%,soluble solids content was increased by 17.9%and vitamin C content was increased by 7.5%in 2020.Overall,the application of straw biological reactor technology in watermelon producing areas of Anqiu city is of great sig-nificance to the high-quality and sustainable production of watermelon.
WatermelonMaize straw biological reactorPhysical and chemical properties of soilYieldQuality
万方数据
维普
