Method for planting rice by fresh water irrigation and drainage and salt control in heavy saline-alkali land

Abstract

The invention discloses a method for planting rice by fresh water irrigation and drainage and salt control in heavy saline-alkali land. The method comprises the following steps: 1, leveling cultivatedland with high precision; 2, preparing a water feeding and drainage system; 3, deeply loosening soil, wherein deep loosening is carried out by using a soil loosening plough, the depth is more than 60cm; 4, executing drip washing with water, wherein drip washing with water is that firstly ploughing is executed, then irrigation and soaking for 3 days is executed, and then quick water drainage is executed, and one or more times of drip washing with water is adopted according to the drip washing effect; 5, planting rice; 6, executing normal irrigation and drainage of fresh water, wherein fresh water is normally irrigated and drained at the initial stage of rice planting so as to achieve the aim of salt washing and controlling; 7, lightly baking fields and adopting no field baking; 8, improving the water quality requirement during the heading and flowering periods of the rice; 9, delaying water cut-off time, wherein water in the fields can be drained thoroughly after grain filling of therice and a yellow ripening stage comes. By adopting the method, rice can be planted in the heavy saline-alkali land, and it is proved through the practice that the growth of the rice is not affected.

Description

technical field [0001] The invention relates to a method for planting rice, in particular to a method for planting rice in heavily saline-alkaline land by utilizing fresh water irrigation and drainage salt control technology. Background technique [0002] Saline-alkali land is widely distributed, and plants in severe saline-alkali soil areas can hardly survive, that is to say, most of the saline-alkali land is wasteland, and the utilization of saline-alkali land has always been a matter of great concern to people. [0003] Rice is often planted in southern my country, but the salt tolerance of rice is not strong. On heavy saline-alkali soil with a salt content exceeding 0.3%, it is difficult for rice to grow, let alone produce high yields. However, the salt content of many saline-alkali lands exceeds 0.4%. To grow rice on such heavily saline-alkali lands, special methods are required. Contents of the invention [0004] One of the objectives of the present invention is...

AI Technical Summary

Problems solved by technology

[0003] Rice is often planted in southern my country, but the salt tolerance of rice is not strong. On heavy saline-alkali soil with a salt content of more than 0.3%, rice is difficult to grow, let alone high yield.