向日葵用途广泛,经济价值高,适应性强,适宜在轻盐碱地、瘠薄地上种植,是我省的主要油料作物之一。要获得向日葵高产,应抓好以下几个环节: 一、合理轮作轮作可以调节土壤养分,减轻病虫危害,连续获得高产,稳产。据试验,向日葵重茬第1年减产54%,第2年减产74%,迎茬减产幅度也较大。向日葵可种在小 Sunflower has a wide range of uses, high economic value, strong adaptability, suitable for planting on light saline soil and infertile land. It is one of the main oil crops in our province. To get high yields of sunflowers, should grasp the following aspects: First, a reasonable rotation can regulate soil nutrients, reduce pests and diseases, continuous high yield and stable yield. According to the test, the first crop of sunflower crop is cut 54% in the first year, the yield in the second year is reduced by 74% and the crop yield is also larger. Sunflower can be grown in small