Answer: This is related to the pear variety, picking date, storage temperature, storage humidity, air tightness of the film bag and other factors. my country's pears are divided into four major systems: Qiuzi pear, white pear, sand pear and Western pear. There are more than 20 common varieties, such as Ya pear, Zai pear, Dangshan Su pear, Snow pear, Xiang pear, Jingbai pear, Qiu pear. White pears, Yaguang pears, Zimu pears, Changbian pears, pineapples, Ba pears, Hangqing pears, Ergongbai pears, New Century pears, Kefir pears, Qie pears, etc.

Generally speaking, most of the pear varieties in the white pear system are storage-resistant; most of the fine varieties in the Qiuzi pear system are better in storage; the varieties in the sand pear system are not as storage-resistant as white pears; and the varieties in the Western pear system are not as durable as white pears. Most varieties are intolerant to storage. In the same system, the storage life of different varieties is also different. Mid- to late-maturing varieties have strong storage tolerance, while early-maturing pear varieties are generally not storage-resistant. Such as Ya pear, snow pear, honey pear, Gu'an pear. Qiubai pears, perfume pears, Hongxiao pears, Shanxi Ben pears, etc. are all resistant to storage.

Chinese Jade Pear has strong storability and can be easily stored in a soil cellar for 6-8 months. Its storability ranks first among Chinese pears;

Prickly pear fruit can be stored at room temperature under normal temperature. Storage lasts for about 15 days;

Hongxiu pear is extremely resistant to storage and can be stored until June of the next year under simple conditions;

Wanxiu pear is a "single pear" used in Korea and A new late-maturing pear variety bred from the "Wansanji" hybrid, it can be stored for about 4 months under normal conditions and more than 6 months under low-temperature refrigeration conditions;

The Golden Pear is the "New High "A new medium-late maturing pear variety bred from crossbreeding. It can be stored for 30 days at room temperature and for 5-7 months under refrigerated conditions of 0-5°C. However, it must be wrapped with plastic wrap during the storage period to prevent water loss and skin wrinkles;

Qiuyang Pear--Western Pear It is an excellent natural variation that can be stored at ordinary room temperature for 2-3 months, or at low temperature until May-June of the following year;

Emerald pear is a new early-maturing pear bred from the cross between Zaosu pear and Xingshui pear. Variety, stored under natural conditions for 1 month, the quality remains unchanged for 80 days in a constant temperature warehouse of 0-5℃;

Yuanhuang pear is a medium-ripening pear bred by the Korean Horticultural Research Institute by crossing Zaoshengchi and Late Sanji. It is a new variety that can be stored at room temperature for about 30 days and at low temperatures until after the Spring Festival;

Atago pear is native to Japan and was bred by crossbreeding between 20th century and Imamura Akira. Introduced into my country in recent years, it is an excellent late-maturing variety in the sand pear series and can be stored until May of the following year;

New pear variety

Xueqing (Snowflake × New Century), 1990 Cultivated in 2008, the tree shape is relatively open, the growth potential is strong, the germination rate and branching ability are high, flower buds are easily formed, and there are many axillary flower buds. The fruit is round and spherical, weighing 300-400 grams, yellow-green, thin skin, and fruit spots. Small, evenly distributed, and very beautiful in appearance. The flesh is white, crispy, juicy, sweet, aromatic, with 12% soluble solids, high quality, small core, and high edible rate. The flowering period is medium and the fruit matures in early August. This variety has large fruits, beautiful appearance, good quality, high yield, stable yield and strong resistance. Pollinating varieties: Huanghua, Xinya, New Century.

Xinya (New Century host. The fruit is oblong and spherical, weighing 300-500 grams. The peel is green, the fruit spots are obvious and evenly distributed. The flesh is white, crisp, juicy, sweet, of high quality, with 12.5% ??soluble solids. The fruit matures in late July, making it an early- to mid-ripening variety. Pollinating varieties: Xueqing, Gui.

Atago pear is a new and excellent variety of sand pear, which exhibits early fruiting, early harvest, high quality and storability. Ripe in early to mid-October, single fruit weighs 300-500 grams, maximum 900 grams, small center, round fruit, orange peel, smooth surface, milky white flesh, fine and crispy, no stone cells, juicy, crispy and sweet, containing sugar Quantity 13.8%, high quality. The biggest advantage of Atago pear is that it bears fruit in the second year after planting. The fruit is extremely resistant to storage. It can be stored indoors at room temperature and can be stored until the end of May of the following year. It does not rot or deteriorate. The saplings can form a large number of flower buds with branches of less than 80 cm in the current year. , the yield of a single plant is 2.5 kg in 2 years, 7.8 kg in 3 years, 17.8 kg in 4 years, and 27.5 kg in 5 years. It shows early results, extremely high yield, strong resistance to black stars and black spots, and high self-flowering rate. It is a worthwhile choice. Excellent varieties vigorously developed.

Xizi Green [New Century × (Yakumo × Hangqing)], a new variety bred in 1990, has strong tree vigor and resistance, moderate germination rate and branching ability, and an open tree , flower buds are easy to form, have good fruiting properties and high yield. The fruit is spherical in shape and weighs 200-300 grams per fruit. The peel is green and turns yellow-green when mature. The skin is thin and the fruit spots are small and few. The fruit surface is smooth and clean, and the appearance is very beautiful. The flesh is white, tender in texture, crispy and juicy, with good taste, sweet flavor and high quality. It contains 12% soluble solids. The fruits mature in mid-July. This variety has an open tree vigor, medium-to-strong growth potential, and flower buds are easily formed. It is an excellent early-maturing variety. Pollinating varieties: Luyun, Xingshui, Jushui.

Qingxiang (New Century × Sanhuali) The tree is relatively open, with green young branches and less hairs, mature branches brown, larger buds, and obvious protrusions on the terminal buds of new shoots. The leaves are medium-large and oblong. The fruit is round in shape, with an average fruit weight of about 280 grams. The peel is brown and smooth.

The flesh is white, dense, juicy and sweet, with 12%-13% soluble solids, small core, high edible rate and high quality. The first flowering period in Hangzhou is in late March, the full flowering period is in early April, and the fruits in the open field mature in mid-August. The pollination varieties are Xinya and Huanghua.

Emerald (Hangqing × New Century) has strong tree vigor, open crown, easy flower bud formation, high fruit setting rate and strong resistance. The fruit is nearly round, with an average fruit weight of 300 grams. The peel is dark green, the flesh is white, tender and crispy, juicy and sweet. Hangzhou fruits mature in mid-August.

Laurel (Snowflake × Yellow Flower), bred in 1990. The tree is strong, the tree shape is relatively open, flower buds are easy to form, and there are many axillary flower buds. The fruit is broadly oval and weighs 300-400 grams. The peel is yellow-green and has a good appearance. The flesh is white, crispy, juicy, moderately sweet and sour, has good flavor, slightly fragrant, and excellent quality. Soluble solids 12%, fruit maturity in mid-August. In cultivation, pay attention to increasing the branch angle and cultivating short fruit branch groups. Pollinating varieties: Yellow Flower, Snow Green, New Century.

Qingkui [(Yakumo × Aijia) × Hangqing], bred in 1990. It has strong growth potential and an open tree shape. It has strong germination rate and branching ability, mainly produces fruits on short fruit branches, has many axillary flower buds, and has high yield. The fruit is spherical and even, weighing 350-400 grams. The peel is green and clean, the surface is smooth, the core is small, the fruit is sour and sweet, the flesh is fine and crisp, the juice is rich, slightly fragrant, and of high quality. Soluble solids 12%. The flowering period is medium and the fruit matures in mid-August. During cultivation, pay attention to increasing fertilizer and water and increasing the branch angle. Pollinating varieties: Huanghua, Xueqing, Xinya, Xinhang.

Cuiguan 8-2 {Xingshui × (Hangqing × New Century)} This variety is the latest popularized new high-quality pear variety. The tree is relatively upright and has high yield. The young branches are green with many hairs on the top, and the mature branches are brown with prominent terminal buds, resembling the new century. The leaves are oblong, dark green, large and plump. The fruits of this variety are nearly round, medium to large in shape, and the average fruit weight is about 230 grams. The peel is thin, yellowish brown, with a small amount of rust spots. The flesh is white, tender and crispy, juicy and sweet, with a small core and about 12% soluble solids. The initial flowering period in Hangzhou is early April, and the fruits mature in the open field from late July to early August. The pollinated varieties are Xinya and New Century.

Hangqing pear (stubble pear) has strong tree vigor, open crown, strong germination rate and branching ability, strong adaptability, strong resistance, easy flower bud formation, early fruiting period, and good fruiting performance. , high yield. The fruit is large, spherical, and weighs 300 to 400 grams. The peel is green, slightly waxy, and the fruit spots are small and dense, evenly distributed. The sepals are persistent and the fruit looks very beautiful. The flesh is white and tender, with a lot of juice, sweet taste, aroma, soluble solids 12.5%, good flavor and high quality. It matures in mid-August. It is a medium-ripe variety with wide adaptability and excellent appearance and quality. . Pollinating varieties: Huanghua, Yaqing, Qingsong.

Yaqing (Hangqing × Yali) is a very strong tree with an open shape, good fruiting and high yield. The fruit is broadly oval and weighs 300-400 grams. The flesh is white, tender and crisp, juicy, sweet and aromatic, with 12.5% ??soluble solids, small core and high edible rate. The flowering period is early, and the fruit maturity period is late, in mid-to-late September. It grows very vigorously and has a large tree shape. It should not be planted too densely. After the saplings are reshaped, they should be thinned and cut appropriately. Pollinating varieties: Hangqing, Huanghua, Qingsong.

Kosui is native to Japan. The tree is strong and upright, with weak branching ability and stronger water than fresh water. It is easy to sprout leggy branches. The fruit is oblate, medium and large, and the average fruit weight is about 150 grams. It matures from late July to early August, with smooth yellow skin, slightly oblate shape, good uniformity, juicy and sweet taste, small core, strong resistance to black star disease, high quality and high yield. It requires good lighting and soil aeration and drainage.

New Century (Twentieth Century × Chojuro) Quoted from Japan. The tree has medium vigor, flower buds are easily formed, and the yield is good. The fruit is oblate and round, with an average fruit weight of about 200 grams. The skin is yellow-brown, juicy and sweet, with medium-to-high quality. The crown is compact, suitable for dense planting. It is an early-maturing variety with a maturity period of In late July, pollination trees with yellow flowers and green flowers can be made.

Xuefeng (Xuehuali × New Century) has strong tree vigor, strong stress resistance, strong germination and branching ability. Early fruiting, good fruiting, high yield and stable yield. The fruit is spherical and even, with a fruit weight of 225-300 grams. The peel is yellow-green, smooth, the fruit spots are not obvious, and the appearance is good. The flesh is white, the core is very small, the flesh is tender and crisp, juicy, sweet and slightly fragrant, with a soluble solid content of 12.5%-14%, good quality and storage resistance. Ripening period is early to mid-August. In flowering stage. Pollination varieties: Huanghua, Xinya, Qingkui, Guiguan, Xinhang.

Xuefang (Xuehuali × New Century) has strong tree vigor, strong stress resistance, relatively open tree vigor, and medium germination and branching abilities. The fruiting period is early, and the yield is high and stable. The fruit is spherical and even, weighing 225-300 grams. The peel is yellow-green, the fruit spots are small and slightly obvious, and the appearance is good. The flesh is white, the core is small, the flesh is fine, tender and crisp, slag, juicy, sweet, slightly fragrant, soluble solids 12%--13%, good quality, relatively durable. The fruit matures early, in early August. In flowering stage. Pollination varieties: Huanghua, Xinya, Qingkui, Guiguan, Xinhang.

Xueying (Xuehuali × New Century) has strong tree vigor, a semi-open tree posture, strong disease resistance, weak branching ability, high yield and stable yield. The fruit is spherical, weighing 200-300 grams, yellow-green, with slightly obvious fruit spots. The flesh is white, the core is small, the flesh is tender and stale, juicy, sweet, slightly fragrant and of good quality. Soluble solids 12%--13.5%, fruit ripening period, early to mid-August, pollination varieties: Huanghua, Xinya, Qingkui, Guiguan, Xinhang.

Green cloud (Yakumo × Aijia pear) is a very strong tree with strong stress resistance, good fruiting performance and high yield. The fruit is spherical in shape, weighs 300-350 grams, has green skin, inconspicuous fruit spots, and is very beautiful in appearance. The flesh is white, crisp and juicy, with a sweet taste and 11.5% soluble solids. The fruit core is small and the edible rate is high. The flowering period is late, and the maturity period is from late August to early September. It has strong stress resistance, high yield and stable yield, and is a mid- to late-maturing variety. Pay attention to increasing fertilizer and water during cultivation to improve quality. Pollinating varieties: Xizilv, Xingshui, Jusui.

Qingyun (Yakumo × 20th century) has strong tree vigor, upright tree shape, strong stress resistance, strong germination ability, medium branching ability, good fruiting performance, early fruiting and high yield. The fruit is round and spherical, weighing 175-225 grams, with small fruit spots and good appearance. The flesh is slightly yellowish white, crisp and tender, juicy, sweet, slightly fragrant and of good quality. Soluble solids 11.5%--12.5%, resistant to storage. The fruit matures early, in mid-to-late July. Pollination varieties: Yellow Flower, Xizi Green, Cuiguan, Xingshui.

Xinhang (New Century × Hangqing), bred in 1990. The tree is open, with medium growth potential and strong resistance. Flower buds are easily formed and the yield is high. The fruit is spherical, even, weighing 200-300 grams. The peel is yellow-green, the fruit spots are small, the fruit surface is smooth, and the appearance is beautiful. The flesh is yellow-white, tender, crispy, juicy, sweet, aromatic, and contains 11.5% soluble solids. The flowering period in Hangzhou is medium, and the fruits mature in mid-July, with high yield and strong resistance. Pollination varieties: Huanghua, Xinya, Xueqing.

Huanghuali (Huangmi × Sanhua), the tree grows very strong, has strong adaptability and disease resistance, the tree shape is open, the germination rate and branching force are strong, easy to cultivate and manage, and the flower buds are It is easy to produce good fruiting, high yield and stable yield. The fruit is large, spherical, weighs 300-400 grams, and has yellowish-brown skin. The meat is white in color, delicate and slightly crispy, juicy, sweet, less sour, slightly fragrant, with 13.5% soluble solids, good flavor and high quality. In the Hangzhou area, the flowering period is early and long, and the fruit matures in mid-August. It is a high-yield, medium-late maturing variety with strong resistance. Pollination varieties: Xinya, Xueqing, Hangqing, and New Century.