Can rain and solar terms graft millet?

Because the grafting period varies with the terrain and climatic conditions, the phenological period should prevail, that is, the rootstock buds germinate without spreading leaves or the temperature is stable at 65438 00℃. At this time, the temperature rises, the sap flows, the cambium moves, and the grafting survival rate is high. Grafting is too early, callus formation is slow, and time is prolonged at low temperature.

During this period, strong wind, drought and even rainy weather will affect the survival rate. If the grafting period is too late, the rootstock will be grafted after its leaves are unfolded, and the temperature is high and it will heal quickly. Although the survival rate is high, the nutrition of rootstock has been consumed a lot when its leaves are unfolded, and the growth after grafting is small. In addition, the growth period is short, and the trees are often weak or even dead.

Therefore, the best time for grafting seedling of chestnut is the first half of April, when rootstocks and scions are full of vitality. Temperature 10 ~ 20℃, humidity above 80%. If you choose sunny days for grafting, the survival rate is high, the seedling growth period is strong, the seedling raising rate is high and the economic benefit is good.

Gregorian calendar every February 18 or so is a rainy solar term. Rain, "the bucket refers to rain, the east wind thaws, the ice and snow disperse into water and turn into rain, hence the name rain." Rain not only indicates the beginning of rainfall, but also indicates that rainfall begins to increase.

With the arrival of rain and solar terms, snowflakes are flying, and the cold air is gradually disappearing, while the days of spring breeze, melting ice and snow, moist air, mild sunshine and drizzle are coming to us. Du Fu has a poem: "Good rain knows the season, when spring happens. Sneak into the night with the wind and moisten things silently. " The poet vividly described that spring is the season when everything germinates and grows. It will come when it needs rain. This spring rain is accompanied by gentle wind. When night falls, it moistens everything quietly, silently and carefully. The poet personifies the rain by personification, saying that it "knows the season" and knows how to meet the objective needs.

In spring, everything germinates and grows, and it rains just when it is needed. A word "good" not only praises "rain", but also praises those who bring timely rain to those in need. The poet expects such "good rain" and likes such "good rain".