Abstract:
【Objective】 To find out the demand of different cotton varieties for basal fertilizer application, so as to improve the utilization efficiency of basal fertilizer and make cotton field high yield and high efficiency.
【Methods】 Based on the observation of cotton growth period and growth and development indexes, and the comprehensive comparison of yield and quality characters of different cotton varieties, the best planting varieties with reduced basal fertilizer application in Alar reclamation area were screened.
【Results】 The results showed that with the decrease of basal fertilizer application, the growth days of Xinluzhong 55 were the longest. Under the treatment of base fertilizer, the plant height of cotton Z1112 was the highest, and the dry matter accumulation was the most, but the nutrient was more consumed for nutrition growth, but less for reproduction growth. Under the treatment of no basal fertilizer, 55 kinds of dry matter accumulation was the least in Xinluzhong 55, so the base fertilizer should be applied to achieve high yield and efficiency. The yield and quality characters of Xinluzhong 22 were better than that of Xinluzhong 55, and there was no significant difference between the yield and quality characters of Xinluzhong 22 when the basal fertilizer was applied half amount, which could reduce the basal fertilizer and increase the fertilizer utilization rate.
【Conclusion】 Under the background of Alar Reclamation Area, the most economic benefit can be obtained by planting Xinluzhong 22.