In the actual production process of rice, there are many factors that affect the yield of rice, among which drainage has a great impact on rice yield, so how to break water for specific rice? Here we will learn about the time and method of water break for rice.
1. Water break time
(1) The spike stage
The water break at the spike stage belongs to the field with flat terrain, fertile soil and large area. This kind of field, because of the flat terrain, the water is discharged slowly, plus the soil is fertile, the rice root system is strong and the plant is growing well, its body storage of water and nutrients can fully meet the growth needs of the plant after the water break, so the water break will not affect the grain pulp filling grain. Soil clay, low-lying deep-footed field is also in the spike period to cut off water.
(2) The first spike period
In general, the first spike of water cut off less water fields, this time cut off water, because the rice fertilizer of the rice fields won, farmers use early water cut off to reduce the fertility of the field, to inhibit the root system to absorb as little water and nutrients from the soil, and then through the sun field and other measures so as to promote the plant from dark green into positive evergreen, to promote the development of strong rod, so that it draws normal spike, reducing the chances of late collapse.
(3) Harvesting period
Late drainage and late water break should be advocated before rice harvest, generally 7 to 12 days before harvest is appropriate. The use of shallow, wet and dry intermittent irrigation technology is characterized by a combination of shallow irrigation and wetting, timely sunning of the field constitutes alternating shallow and wet, and shallow and wet-dry are flexibly adjusted to diversify the moisture condition of the rice field.
(4) Weather
The weather also affects the water break in rice fields. High temperature and drought water break should be delayed appropriately, and rainy streaks should be cut off early. Early water break for early tassels, late water break for late tassels.
2. Rice water break method
The main purpose of water break for rice is to facilitate harvesting, especially now are using harvesting machines to harvest rice, rice fields if not dry, the machine can not get off the field, so the release of water is particularly important. The method of water break is very simple, after the whole field flush spike period began to dig the gap to break the water, there are also early spike period began to break the water, there are some paddy fields did not break the water at all.
The principle of water break should be mastered flat dam field, a large area of water fields, low-lying fields, soil clay fields to break water in the spike period; sandy fields, sloping can fields to break water late. In general, the upland water break late, depressions early water break, fat win the field more to break water in the beginning of the spike.
The above is about the time and method of rice water break is introduced, rice is China's three major staple food among the only crop growing in the water, planting rice to high yield and high quality, it is important to do a good job of water break management.
The time and method of rice water cut-off
2022 05/13
