Northeast rice growth periodic table, how to achieve sustainable development

Rice in the Northeast is generally planted only once a year, with a growth cycle of about 110-180 days. From south to north, the planting time of Northeast rice is from April 25 to May 25, and the full ear period is from July 20 to August.

On October 15th, the harvest time is generally around early October.

1. Rice growth cycle table in Northeast China 1. Rice in Northeast China is mainly early-maturing and early-japonica rice, which is generally planted only once a year. The growth cycle is long, about 110-180 days, and the average temperature is between 18-23°C.

Since the temperature accumulation period is long and the sunshine is sufficient during the planting period, the rice produced in the Northeast is of high quality.

2. From south to north, the planting time of Northeast rice is from April 25 to May 25 (the daily average temperature is stable at about 5-6℃ for sowing), and the full ear period is from July 20 to August 15.

Harvest time is generally around early October.

Among them, the southern areas are mostly medium and late maturing types, and the northern areas are mostly extra early maturing types.

3. Most of the rice in Northeast China is planted in the plain areas of the Heilongjiang, Songhua River, and Wusuli River basins and in the valley basins of the eastern mountainous areas. The planting area is about 50 million acres.

2. How to achieve sustainable development of rice in Northeast China 1. The three northeastern provinces have little room for development of planting area. Currently, only Heilongjiang Province has the potential for further development. However, when developing new planting areas, attention must be paid to maintaining the local ecological balance and wetlands cannot be occupied without authorization.

for planting.

2. There are fewer irrigation water sources in the Northeast. When watering rice fields, it is necessary to reduce the quota of watering, improve the utilization rate of water resources, and promote rice varieties that require less water.

3. The temperature in the Northeast is relatively low. During the planting process, it is necessary to prevent frost damage, promote rice varieties with better cold resistance, and pay attention to the prevention and control of rice blast disease.

4. Strengthen the cultivation of widely adapted early-maturing super rice and super hybrid rice to reduce seed production costs and increase rice yields.