| In this study,the leaf surface fertilizer provided by INSTITUTE Of COTTON RESEARCH OF CASS used as a test material to study the effects of spraying foliar fertilizer on cotton growth,yield and quality,so as to select the best formula foliar fertilizer and spraying period for the southern of Xinjiang cotton farmers.The reasonable application of foliar fertilizer provides a theoretical basis,and further provides scientific basis and lays a theoretical foundation for the promotion and application of new strong foliar fertilizer in southern Xinjiang.The main research results are as follows:1.Effects of different treatments on the growth and development of cotton at different growth stages of cottonThere was no significant difference in plant height between spraying foliar fertilizers with different treatments and seedlings of fresh water at the seedling stage.The plant height of the spray formula 3 alone was significantly higher than that of the clear water control at the flowering stage.Spraying formula at seedling stage 1,single spraying formula at bud stage 2,comprehensive effects of spraying three formulas at flowering stage(Treatment 7)and conventional spraying foliar fertilizers all significantly increased cotton stem diameter compared with that of fresh water control.2.Effects of different treatments of foliar fertilizers on cotton dry matter accumulation and its physiological indexes at different growth stagesThe combined effects of spraying a new strong formula 1 at the seedling stage and production of conventional spraying foliar fertilizers and budding stages(Treatment7),spraying formulations alone during the flowering period 3 SAPD values are significantly higher than other treatments,increasing leaf chlorophyll content.The comprehensive effects of spraying the three formulations(Treatment7)and the production of conventional spraying foliar fertilizer(Treatment2)increase the content of enzyme-protecting enzymes in the leaves,so that the net photosynthetic rate,stomatal conductance,and other photosynthetic indexes can be recovered quickly.The combined effects of the three formulas(Treatment 7)and formula 3sprayed alone at the flowering and boll stage can quickly supplement the nutrients in the later stage of cotton,promote the photosynthesis of cotton,delay the premature aging of cotton,and promote the accumulation of dry matter into the reproductive organs.3.Effect of different treatments of foliar fertilizers on yield and quality of cotton at different growth stagesThe combined effect of the three formulations(Treatment 7)was the highest in the number of bolls per plant,which was 2.9,compared with the control spraying water,the production of conventional spraying foliar fertilizer(Treatment 2),and the new strong stock solution(Treatment 3).1.8,0.94 cotton bolls.The single boll weight was the highest in Formulation 3 alone,and the boll weights increased by 7.90% and3.21%,respectively,as compared to the control spraying of fresh water,the production of conventional spraying foliar fertilizer(Treatment 2),and the new strong liquid(Treatment 3).At 1.78%,there was no significant difference between the three formulations(Treatment 7)and the single boll weight of Spray Formula 3 alone.The combined effects of the three formulations(Treatment 7)were increased by 8.18%,4.67%,and 4.52%,respectively,as compared with spraying fresh water,production of conventional spraying foliar fertilizer(Treatment 2),and new-strength raw liquid(Treatment 3).The average fiber length and specific strength of the upper half of the fiber in the production of conventional spraying foliar fertilizer(Treatment 2)were 1.22 mm higher than that of the fresh water control,and the specific strength was enhanced by 0.8 CN/tex,but the uniformity was significantly inferior to other treatments and was only 82.90%.The elongation of sprayed fresh-strength liquid fiber was thehighest(6.18%),the micronaire value,the average fiber length of the upper half,and the specific strength were moderate,but the fiber specific strength was inferior to other treatments;the combined effects of the three formulations(Treatment 7)on the fiber The average fiber length,specific strength,elongation and other properties of the half(30.02 mm,29.21CN/tex,6.08%),the best uniformity(84.29%),and the micronaire value performed well,so the comprehensive view of the new strong The combined effect of the three formulations of foliar fertilizers(Treatment 7)is superior to other treatments. |
