Method for preventing black spots at flowering and fruiting phases of early crisp red pears

Abstract

The invention discloses a method for preventing black spots at flowering and fruiting phases of early crisp red pears. The method comprises the following steps of 1, orchard cleaning and disinfection, 2, flowering phase management, 3, flowering phase fertilization, 4, fruiting phase management and 5, fruiting phase fertilization. According to the method, environment conditions at the growing stages of flowering and fruiting phases of the early crisp red pears are controlled strictly, and a nutrient solution A and a nutrient solution B achieving an inhibiting effect on pathogenic bacteria are applied, so that the incidence rate of the black spots of the early crisp red pears is greatly reduced under the condition of co-constraint of material conditions and the environment conditions, and the conditions and quality of fruits are improved. The method is safe, practical and free of pollution.

Description

technical field [0001] The invention belongs to the field of planting, and in particular relates to a method for preventing black spot disease of Zaosu red pear at the flowering and fruiting stages. Background technique [0002] Zaosu red pear is a bud variety of Zaosu pear. The variation characteristics are: young leaves are purple red, pear flowers are pink, young fruits are all red, and fruit strips are red after ripening; The taste is strong and sweet, the soluble solid content is 12~14%, the sugar content is 11~12.5%, the quality is high, and it has the good shape and taste of Zaosu pear. Wonderful pears". Because of its excellent appearance and quality, it has been loved and planted by more and more people. [0003] In the process of planting Zaosu red pears, black spot is a common and frequently-occurring disease, which mainly harms fruits, leaves and new shoots. It is one of the three major diseases of pears. It is invaded by the fungus Alternaria alternata Genera...

AI Technical Summary

Problems solved by technology

At present, people mainly rely on chemical agents for prevention and control, usually spraying 0.3% sodium pentachlorophenate plus 5Be lime sulfur mixture before the tree germinates, and spraying 200 times the amount of lime Bordeaux mixture after falling flowers, or 50% Dyson Ammonium 1000 times liquid, tuzet wettable powder 600 to 800 times liquid, 10% polyoxymycin wettable powder 1000 to 1500 times liquid, but the frequency of spraying in this way is not easy to be too many, which will endanger the natural environment and cause drug pollution. The remaining hidden dangers cannot guarantee the production of green and pollution-free fruits, which is not conducive to the healthy and sustainable development of the entire Zaosu red pear industry