The reporter recently learned from the Plant Protection Station of the Provincial Department of Agriculture that, based on the facts of the situation in the region, combined with weather, cultivation and other factors, it is estimated that the overall trend of the citrus generation of our province this year is moderate (level 3), and individual management is poor. The orchard will focus on the occurrence (level 4).

It is understood that the number of populations of the population after the winter of the citrus tip of this year in our province is lower than last year and the calendar year, and the larvae have seen the same period as last year. According to the survey data of more than 10 monitoring stations in the province, the average number of females per leaf after the winter of this year was 0.44, which was 0.22 less than that of the previous year, and 0.41 less than the average per leaf. The citrus plantation in Dagua County, Daxian County monitored 10.2% of the insect leaf rate after winter, which was 1.6 percentage points lower than last year. The average female leaf size was 0.31, which was 0.4 less than last year. The individual management was poor in the orange orchard and old age. After winter, the orange tree had a large amount of debris, with 65% of the loquat leaf rate and 3.52 female louse. On April 25, a new generation of hatchlings was seen, which was 2 days earlier than last year. The senior planting technology of citrus fruits in Nanxi Citrus Garden was estimated to be based on a population of overwintering bases, with females ranging from 0-15 head/leaf with an average of 1.3 heads/leaf, 0.04 head/leaf lower than last year. The first generation of Rugao was first seen on April 22, two days earlier. The first generation of youngsters of Jintang Citrus acuminata was first seen on May 7 and was postponed by 4 days from the previous year.

At the same time, with the adjustment of planting structure, the citrus area in our province has increased year by year in recent years. In addition, the structure of varieties has been optimized, the old varieties have been replaced by higher ones, and the planting area of ​​young trees and young trees has been increasing, which is conducive to citrus. The occurrence of cusps.

In addition, according to weather trends in the provincial agro-climatic center, how citrus scabs are prevented and treated in the early summer (May~June) in this year, the rainfall in most of the basin is less than 2–40%, and the temperature is about 1°C higher. Among them, the temperature in the whole province is high in May. The main reason is that the precipitation is dominated by less, which is conducive to the breeding harm of pests. In midsummer (July~August), the temperature in most areas of the province is about 1°C higher, precipitation in the central and northern parts of the western Sichuan Plateau and in the western part of the basin is 1-20% higher, and precipitation in the rest of the province is 1-3% lower. With the exception of the western Sichuan Plateau and the western part of the basin, low precipitation and high temperatures in other areas are conducive to the occurrence of pests.

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