How to ripen raw durian:

1, ethylene ripening method:

Buy a ripe banana (or apple) and durian meat together (no matter what you use to put them together), the cold days, it will be ripe in about 3 days, and the hot days, it will be ready in about 1 day. This is because ripe bananas (or apples) release ethylene gas, which itself is used by many fruit farmers for ripening purposes. Overall, putting ripe fruits together with unripe durians will help to hasten the ripening process.

2, the raw durian "put" cooked:

With two newspapers to the durian whole wrap and then placed in a cool place, do not more contact with oxygen and air, so that the durian will not be cooked rotten. You can eat it after two days. If you see it cracking, you can eat it. If you leave it any longer, it will be too dry. If you don't have newspaper, use plastic wrap or a thick towel, not a plastic bag.

Durian (scientific name: Durio zibethinus Murr ), is a giant tropical evergreen tree, leaves long round, more pointed at the tip, cymes, flower color yellowish, fruit soccer size, solid skin, dense triangular thorns, the flesh is composed of the aril's meat packet, the flesh is yellowish, viscous and juicy is a very economic value of the fruit.

Durian is one of the famous tropical fruit, native to Malaysia. Some countries in Southeast Asia planted more, of which the most Thailand. China's Guangdong, Hainan is also planted.

Durian in Thailand is the most prestigious, known as the "king of fruits". It has a strong odor, those who love it praise its fragrance, those who hate it complain of its odor.

Legend has it that during the Ming Dynasty in ancient China, the fleet arrived in Southeast Asia, tasting the local specialty fruit, Zheng He greatly appreciated this fruit, however, the fruit can only be ripe once a year, so the name to stay in love with, and the later take its harmony, called the durian.

Commonly used seed propagation of durian, but the durian genetic variability, each nucleus may grow ten different qualities of the fruit, and the good and bad, inferior durian can be bred out of the very best varieties. Similarly, good durians can also produce inferior varieties, and some live durians do not bear fruit for the rest of their lives. In order to breed good varieties, to ensure that the varieties are pure, early knot yield, more grafting propagation to breed durian.

Budding

Almost all dicotyledonous woody plants can be propagated by budding, except for monocotyledons and some plants with irregular formation layers. Rootstock pencil size, now rootstock stem 10cm from the soil, from top to bottom cut two 0.7cm wide, 3 ~ 4cm long slit, in the two slit at the top of a flat cut, pull up the skin, the length of the buds and buds to match the piece. At the lower end of the incision, a small amount of skin was left to hold the bud piece. The process of obtaining the bud piece is the same as pulling up the skin from the cutting slit in the rootstock, and then, after setting, tie it tightly with a 1cm wide plastic film strip. It is best to keep the graft away from rain for two days.

Note that other fruit tree budding methods can be completely wrapped around the buds, with the exception of the durian, as the buds on the bud pieces tend to fall off. You can tell if it is viable after two weeks. When it is viable, the upper end of the rootstock is cut off about 30cm from the bud to stimulate rapid growth of the bud. In the future, the rootstock will grow a lot of anvil branches, these anvil branches can not be completely removed, must be turned down one or two branches to help the bud to absorb nutrients, but the anvil branches must not be allowed to grow too much, need to be pruned from time to time so as not to impede the growth of the bud.

Splitting

Seedling buds that have not yet opened their leaves or have not yet become woody are best used as rootstocks. In the rootstock from 6 ~ 7cm flat cut, in the middle of the flat rootstock straight down a cut about 1cm deep into the "V" shape; get and rootstock diameter and have two or three buds of the branch tips for the scion, about 8 ~ 10cm long, will be cut off the leaves 3/4, the scion of the lower end of the wedge, inserted into the rootstock cut seams, with a film tape tied tightly. Afterwards, use transparent plastic bag to cover the whole seedling in order to prevent the scion water is evaporated out, placed in the shade about two or three weeks, such as the scion leaves will not fall off that is successful.

By grafting

Only suitable for a small amount of propagation, planted in a plastic bag of seedlings about six or seven months old can be used as rootstocks, the scion of the branch tip size and the rootstock is equal to the ideal is the upright nutrient technology.

Cuttings

The cuttings should be about 15cm long, the diameter of a chopstick, and have several leaves and buds, each of which should be trimmed by two-thirds to prevent water evaporation. The downward-facing end of the branch is cut diagonally or forked 1cm from the bottom up, coated with a layer of hormone rooting agent, inserted into a moist sand cup, placed in a greenhouse with low light, watered, and then transplanted into a plastic bag after seven or eight weeks if the leaves don't fall off and the young roots grow.

Branch tip ventral

Rootstock size can be, as long as it has grown into wood, the cortex is easy to peel, insert the tip of the height of the choice, the incision process is similar to budding. Selected 10cm long yet to open the leaves, not yet the strong shoots of the stature of the scion for the scion, scion slanting length than the rootstock cut slightly shorter than the rootstock cut, inserted into the rootstock cut, tied with plastic tape, and then wrapped tightly in transparent plastic paper, placed in a cool place. Two weeks later, cut open the plastic paper, but the tape should not be unraveled until the branch tips grow into.

Aerial pressure strip

Aerial pressure strip is not seasonal, choose the pencil larger branches, counting from the end of the too about 40cm in the ring peeling length of about 3cm, peeling the skin need to use the back of the knife to cut off the incision at the formation of the layer, otherwise the incision of the skin layer will be revitalized and do not produce roots. Wrap the incision with a ball of moist soil, the size of a duck's egg. Bundle it with plastic wrap in three layers and tie it tightly at both ends. After about three months of new root growth, you can cut it away from the mother. Cut open the plastic paper and plant it in a black plastic bag of fruit seedlings, place it in a cool place, and transplant it after about one or two months. Due to the low survival rate, it is seldom used when propagating durian.

Ripening is a technique that utilizes artificial acceleration of the crop to ripen the fruit. It is generally used when the crop does not ripen properly under natural conditions, or when there is a need to make it ripen earlier, or when there is a requirement to bring the harvested but unripe fruits to maturity in a short period of time.

Ripening has the following effects:

①Satisfy commodity requirements. Some fruits such as bananas, persimmons, tomatoes, etc., in order to adapt to the needs of the market balanced supply and transportation, some must be harvested when the product is not ripe. The use of ripening means, you can make the harvested fruit in the required time to ripen. ② so that the maturity of the product is more concentrated, conducive to mechanical harvesting, such as walnuts, wine grapes, etc..

3 in the multi-cropping area, ripening can make the former crop early to vacate the land, so that the latter crop planted at the right time.

④Evade the influence of adverse weather. Field crops such as wheat, in order to alleviate the dry and hot winds caused by the "forced ripening" to reduce yields, but also made the drug ripening research.

⑤ Reduce losses due to the selection of varieties or improper technical measures to make the crop ripen late. In addition, under certain conditions, the sugar cane ripening can increase its sugar content.