First, before the flower dressing:
Early flowering can increase the quality of flower buds, meet the nutrient consumption of flowering, and increase the fruit setting rate. Can be applied to the compound fertilizer-based quick-acting fertilizer in the first half of the month, generally 0.5-1 kilograms per tree, and 1-2 kilograms of urea for trees with weaker vigor. The amount of fertilizer should be 10-15 percent of the year. %.
Second, before the flower cut:
For pruning trees that are too lightly trimmed and with a large amount of flowers to be cut, they should be cut back, mainly by thinning out weak and weak branches, diseased branches and dense branches, adjusting the load of fruit trees, and determining the amount of remaining flowers based on the amount of retained fruits. The amount should be 1-2 times more than the reserved fruit amount, leaving only one flower bud per fruit stage, removing too many flower buds, and a bunch of flowering species that are not sensitive to pruning reaction due to growing branches. Flower buds, to be appropriately short cut, can bring the resulting branch close to the trunk, and can also promote the occurrence of long branches to prepare for future results.
Third, sparse and artificial pollination:
Pear tree flower buds are compound buds, with as many as 5-18 flowers per inflorescence, and flowering consumes a lot of nutrients in the tree body, eliminating redundant flowers, allowing the nutrient supply of the tree to concentrate, increasing the fruit setting rate, and sparsely flowering during inflorescence separation. , leave 1-2 flowers on each inflorescence. For varieties with low self-fertilization rate, pollination trees should be allocated. If pollination types are not configured, artificial pollination should be conducted. Artificial pollination should be conducted on the full-expanded buds of adult trees that are suitable for pollination in 2-3 days before pollination. The flowers that have just been opened, take anthers, dry out powder, and concentrate human resources at the beginning of the flowering period.
Fourth, spray boron during flowering:
Boron promotes the germination and elongation of pollen tubes and promotes the transport of sugar in the tree. Spraying boron at flowering stage can increase the fruit setting rate of pears. It can spray 0.3-0.5% borax once every 25% and 75%. Acid solution, plus 0.3-0.5% urea, flowering requires a large number of phosphorus, potassium plus spray or single spray 0.3% potassium dihydrogen phosphate solution, can also increase the fruit setting rate.
V. Frost protection during flowering:
The pear blossoms early and the flowering period is mostly before the night frost. It is extremely vulnerable to the late frost. After the pears are frozen, the female flower is browned, dried and shrunk, and flowers can not be set. The methods for frost protection are as follows:
1. Watering before flowering can reduce ground temperature, delay root activity, postpone flowering, and reduce or avoid the harm of late frost.
2. The trunk is covered with white and the white trunk is painted before flowering. The temperature of the tree can be slowly increased to delay the flowering period by 3-5 days, so as to avoid or reduce the frost damage.
3. Smoke, smoke, smoke, smoke can reduce the radiation of soil heat radiation, play a moisturizing effect, while the smoke particles can absorb moisture, so that condensation of water vapor and release heat, increase the temperature, reduce or avoid frost damage. The flowering period should listen to the local weather forecast. When the temperature is likely to fall to -2 °C, it must be frost-proof. The commonly used smoke-smoke materials are sawdust, straw, fireweed, leaves, etc. Layered and staggered stacking, with firelights interposed in the middle to facilitate ignition of smoke and smoke before smoke To organize a dedicated manpower division on duty, hang a thermometer 1 meter away from the ground and record the temperature at a time. If the temperature suddenly drops to 0 °C in the early morning, the smoke should be ignited and smoked. Fire up the flame and try to make it emit smoke, and be careful not to burn the branches of the tree. Can also use anti-frost aerosol anti-frost, the formula is commonly used is 20-30% ammonium nitrate, sawdust 50-60%, waste diesel 10%, fine coal powder 10%, ammonium nitrate, sawdust, pulverized coal fine as possible , Proportioned with a good, into the iron cylinder, with the time of ignition, the amount of 2-2.5 kg per acre, attention should be placed on the top.
Salty Beans,Round Black Bean Salted,Salted Black Bean Round,Salted Soy Beans
jiangmen city hongsing food co., ltd. , https://www.jmhongsing.com