When will early, middle and late rice be planted respectively? When is the best time to harvest?

Rice is the most important and oldest kind of grain. Originally from China, rice was grown in the Yangtze River Basin in China 7,000 years ago. Due to the different climatic environment, rice in China can be divided into three categories: early, middle and late rice, so when will they be planted respectively? When is the best time to harvest? The details are as follows:

1. In the middle and lower reaches of the Yangtze River, early rice is usually sown at the end of March and the beginning of April, and harvested in mid-late July.

2. Medium rice is generally sown from the beginning of April to the end of May and harvested in mid-late September, while late rice is generally sown in mid-late June and harvested in the first and middle of October.

3. In the same area, after planting early rice, you can then plant late rice, commonly known as double-cropping rice. However, the growth period of medium rice is longer, and it can only be planted once a year in the same area. Generally speaking, it must be finished before the Beginning of Autumn, and the late rice harvest from late October to November.

Accurately grasp the harvest time of rice, sow at the right time, harvest at the right time, and pay attention to the three periods that affect rice yield most: tillering stage, young panicle differentiation stage and grain filling stage. Reasonable management of rice in these three periods is the guarantee of stable and high yield of rice.

What's the difference between early rice, middle rice and late rice?

The distinction between late rice and early rice: the main difference between them lies in the different climatic environment of the cultivation season, resulting in different adaptation to the cultivation season.

In the growing season of late rice, the temperature is from high to low, the day length is from long to short, the light is from strong to weak, and the wind and rain is from more to less, while that of early rice is just the opposite.

Early rice can be used as late rice, which is called turning autumn, and the growth period is shortened. The growth period of late rice for early rice is prolonged, which affects the cultivation of late rice and is generally not available.

There seems to be a typhoon in northern Zhejiang in July. Please refer to the following:

Early rice is sown before April 5, while medium rice is better in mid-May. Late rice is about June 10 th.

Medium rice can be cropped in one season, and early and late rice can be cropped in a row.

Rice ripening can be divided into four stages: milk stage, wax stage, mature stage and withered stage.

The milking stage begins at 3-5 days after flowering. The duration is about 10 days. At the end of the milk stage, the fresh weight reached the maximum, during this period, there was a feeling of hard matter in the middle grain of rice ear by hand.

The wax ripening period lasted about 7 Mel for 9 days. During this period, the grain content of rice was sticky, there was no emulsion, and the dry weight was close to the maximum. The green on the back of the rice grain began to disappear, and the husk turned a little yellow.

In the mature stage, the husk of rice turns yellow, the moisture of rice grain decreases, the weight of dry matter reaches a fixed value, and the grain hardens and is not easy to be broken. This period is the best harvest time. About 45-50 days after heading, the yellowing maturity rate is more than 95%.