Slogans to protect fruits and plants

Spring rain is as expensive as oil, it's raining! How precious spring rain is, it is really "spring rain is as expensive as oil"!

Summer melon and fruit exhibition, in the summer market, you can see watermelon, peach, litchi and other fruits. The "Summer Melon and Fruit Exhibition" is really worthy of the name.

Autumn wind sweeps the leaves. Comrade Lei Feng said that we should "sweep the leaves in the autumn wind" when dealing with the enemy, and we should also learn this spirit.

Winter snow covers spring and autumn, it's snowing! White earth, can't see any plants, it's really "winter snow covers spring and autumn"!

Spring is followed by autumn and winter. If there is little rainfall in autumn and winter, the soil moisture itself is not good, and it is often easy to form drought in winter and spring.

The spring drought in North China is more serious. The spring rain accounts for 10- 15% of the annual precipitation, and in some places it is less than 10%. In spring, there are two dry seasons, autumn and winter. In addition, the temperature rises rapidly in spring, windy days and strong evaporation are often prone to persistent drought. At the same time, it is the time when the overwintering crops turn green to milk maturity, which requires a lot of water, as well as corn and cotton. It also needs plenty of water, so the spring drought is more prominent. If there is rain at this time, it will naturally be particularly precious, so there is a saying that "spring rain is as expensive as oil". The reason is that summer fashion stays in Lingnan area at this time, and the rainy season has not yet arrived.

In the northeast and south, this statement is not very applicable. First, there are more opportunities for rain in the south in spring. Second, although there are few spring rains in Northeast China, and two-thirds of the precipitation is concentrated in June-August, the winter in Northeast China is long, with thick snow on the ground, 40-50 cm thick in mountainous areas and 20 cm thick in plains. In winter, the temperature is low and the evaporation is small. Snow is like a reservoir, which accumulates most of the winter precipitation. The snow melted in the second spring, just as spring sowing began, and snow water became a stable water source, and there was no spring drought in Northeast China.

Yellowing leaves can best outline people's deep heart, that kind of inexplicable faint sadness, and of course their feelings for autumn. After all, why do you like autumn so much? The sky is high and the clouds are light, and the autumn is crisp and endless. Autumn has a quiet and depressing beauty, a touch of sadness, nostalgia and sentimentality, which is most memorable.