日韩AV片无码一区二区三区,中文人妻熟妇乱又伦精品,精品国产肉丝袜久久,久久精品无码一区二区日韩AV

Pear pollination tips

Pear generally open after early morning 8:00, the day of opening flowers can pollinate flowers pollinate the best 1 to 2 days, the third day of pollination, fruit set rate is very low. Day open flower, the anthers are pink, the next day due to rupture edge anther put some powder, it becomes a dark brown, almost became the third day all dark brown anthers of this flower, discoloration due to wilting, pollination stigma is not a role.
1, cited bee pollination: for more than 20 percent of the orchard pollination tree configuration uniform accounting Park, cited bee before flowering, usually every 10 acres of land a box of bees.
2, hanging pot pollination: Cut flowers will be pollinated varieties of pear, inserted in the water bottle, hanging in pear cultivars in the upper part of each tree hanging from 2 to 3, the more flowers the better.

Previous：After the flowers pest control         Next：Apple pollen collection Precautions