Watching cotton boils apply fertilizer to cotton

In the middle and late stages of cotton growth, flower and bell fertilizer should be accurately applied according to the changes in peach and leaf color. Generally, the force is good, the seedlings have many fertilizers, the flowering period grows prosperous, the leaves are large, the leaves are dark, the internodes are thin, the pods are not tight, the peaches are not tight, and the leaves are not faded at the time of flowering. Such cotton field bells Fertilizer can not be applied early, should be pushed to increase the number of peaches, and when the color of the leaves fades, apply it again. On the contrary, poor soil fertility, less seedlings, less buds, weak flowering periods, small leaves, pale leaves, short and thin internodes, pale leaf color, less flower buds, and pale yellowish color at the early flowering stage, can be applied at a rate of acre per acre. 5 to 8 kilograms of urea fertilizing fertilizer, to flower and boll again in time to apply flower bell fertilizer.

The use of flower bell fertilizer varies depending on the species. Concentration of bolls, early maturing varieties, buds should be applied early, so that the peak fertilizer effect is consistent with the peak of flowering and peach. In addition, if the weather is dry early and the air temperature is high, the evaporation of soil moisture is large, and normal cotton and leaf color should be applied in advance. For poor soil quality and weak growth, the plots with less fertilization in the early stage can not wait until the flowering period. To see peach and leaf color, fertilization should be advanced to the early blooming stage. For late-onset cotton, as long as the growth is good and the peach is too small, it can not be applied early, and the amount can not be used to ensure a long and steady peach. Good soil fertility, prosperous early growth, flower and bell fertilizer can be postponed until after the peach leaf color fade and fertilization.

The amount of flower bell fertilizer depends on the color of peach and leaves. In general, there are many peaches and leaves, and the leaves color retreats quickly. The amount of fertilizer should be used earlier; the amount of peaches should be reduced, and the color of leaves should be reduced slowly. The amount of fertilizer should be used later, so it is better to use long-term urea. Mushi 10~ 15 kg.

The flowering and bolling period is during the high temperature season. Deep flower and bell-fertilizers can increase fertilizer efficiency. Generally, it takes 10 to 12 centimeters deep and 15 centimeters to leave the cotton plant. The plot has been used, if the late growth trend is found, 1 kg of urea can be added per mu and 150 to 200 g of potassium dihydrogen phosphate can be used to spray 80 to 100 kg of water to increase the boll weight and promote premature maturation. Improve quality and yield.