Pest control methods of jujube pest
This insect, also known as jujube Buqu, occurs widely in jujube producing areas in China, and infects buds, buds and leaves with larvae. Serious years can eat up jujube buds, buds and leaves, not only no yield in that year, but also affect fruit setting in the coming year.
[occurrence regularity] this insect produces one generation a year. Overwintering as a pupa in the soil near the tree trunk. The adults began to unearthed Eclosion in March of the following year, the peak period of Eclosion was in April, and the last stage was May, and the whole Eclosion period could be as long as 60 days. The egg period is 10-20 days, and begins to hatch in the middle of April. The peak period is in the first ten days of May, and the whole incubation period is about 50 days. The larval damage period is from 4 to 6, and the damage is the most serious in May. In June, the larvae began to mature and gradually pupated.
[control methods] (1) excavate the overwintering pupae of jujube inchworm in the soil around the tree trunk in autumn and winter and destroy them centrally. At the beginning of March, a 10-15 cm plastic film band was tied at the base of the trunk to prevent the female moth from climbing the tree, and the adults were killed below the plastic belt every morning and evening. (2) to master the elimination of larvae by spraying at the initial hatching stage. Drugs can be used with 30% acephate emulsion 500x, or 80% dichlorvos emulsion 1000 times, or 75% phoxim emulsion 3000 times, or 20% fenvalerate emulsion 4000 times, etc. Due to the long incubation period of the whole larva, it is necessary to spray continuously for 2-3 times, each time at an interval of 7-10 days, and good results can be obtained.
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Golden 21st century pear
1. The fruit is round, with an average single fruit weight of 300ml / 350 g and a maximum fruit weight of 500g. The pericarp is yellowish green and yellowish white after storage. The flesh is yellow and white, the flesh is delicate, soft, juicy and without stone cells after storage. It can be stored for 40 li for 60 days under natural conditions. 2. After two years of planting, the fruit can reach more than 85%, the yield per mu in three years is 1500 kg, and when the fruit is full of fruit, it can bear fruit by self-pollination, and cross-pollination is better. 3. Flowering on April 10, fruit ripening and pollination in early September
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127 fragrant pear
127 pear fruit is gourd-shaped, mature around September 10, the pericarp is yellow, red to the sunny side, a single fruit weighs 50 to 80 grams, with a maximum of 150 grams. It is sweet and crisp when it is first ripe, which can be kept for 30 to 40 days, and then it is soft, not only the skin can be removed completely, but also the pear juice does not drop at all. the flesh is delicate, stone-free, sweet and sour, with strong aroma, and its quality is better than that of large and small perfume pears and Qiuxiang pears. Today, when consumers are increasingly worried about pesticide residues in the pericarp, its production and sales advantages are extremely obvious, although its selling price is on the same period.
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