20%康福多SL不同施药方式对棉花生长发育及品质的影响

The Effect of 20% Confider SL Applied by Different Methods on Growth,Development and Fiber Quality of Cotton

各种栽培因素对棉花生长发育及棉纤维品质的的影响研究较为完善,但杀虫剂对植物生长发育的影响研究较少。通过20%康福多SL不同施药方式对棉花生长发育及品质影响的研究,表明喷雾处理棉花长势较对照高大粗壮,蕾铃数较多,40 g/667 m2茎叶喷雾处理植株粗壮,蕾数最多,衣分率高,表现出较好的促进生长的作用。虽然80 g/667 m2灌根处理棉花植株较对照高大,蕾铃数少,对棉花生长的促进作用不显著,但棉纤维较长,整齐度、伸长率较高,短绒指数较低,可纺系数较高,棉纤维品质有较好改善。综上所述,20%康福多浓可溶剂茎叶处理表现出较好的促进生长作用,而灌根处理对纤维品质的改善效果明显。

There were many papers researching the effect of cultivation on growth, development and fiber quality of cotton,however, the impact of pesticide on it was rarely studied.Based on the study of 20% Confider SL applied in different methods on cotton development and fiber quality, the results showed that the development of cotton plant by treatments of 20% Confider SL foliar application are stronger than that by control, plant size by treatments of 80 g/667 m^2 is the strongest comparing with all other treatments, and the number of bells, the lint percentage are higher as well. Although the plant size is bigger than that of control by treatments of 80 g/667 m^2, the numbers of bolls are fewer. It seems that the foliar application showed better effect in the development of cotton than treatments of 20% Confider SL applied in watering root. However, treatments of 20% Confider SL applied in watering root shows better effects on cotton fiber qualities, especially in fiber length, length uniformity, elongation, the index of short fiber as well as textile index . In summary, the treatments of 20% Confider SL foliar application display the good function on cotton development; whereas the treatments of 20% Confider SL applied in watering root obviously improve the fiber quality.