Dry direct seeding and sprinkling irrigation cultivation method of rice in hillside non-ridge fields

Abstract

A dry direct seeding and sprinkling irrigation cultivation method of rice in hillside non-ridge fields relates to the field of rice planting and solves the problem that an existing rice planting process has high labor consumption and water waste. The method of the invention comprises: preserving whole seedlings at a time, and sowing to a depth of 1-2 cm; covering, to be specific, in post-sowing seedling stage, covering soil with 300 ml / mu of butralin or 250 ml / mu of pendimethalin; disinfesting, to be specific, when young seedlings grow with one leaf and one core or two leaves and one core, spraying 500-600 ml / mu of 34% propanil emulsifiable concentrate; applying both seeds and fertilizer, wherein no topdressing is applied after single fertilizer application; performing sprinkling irrigation in water-requiring sensitive stage, and applying water stress in other growth stages, wherein sprinkling irrigation is performed separately in the stage of seedlings growing with 4.5 leaves, the stage of seedlings growing with (N-n+1) leaves, the stage of seedlings growing with two inverted leaves, and the full heading stage, and sprinkling quantity is not less than the rainfall of 30 mm each time, wherein N refers to total leaf age, n refers to stem internode number, and n=N / 3. The method of the invention has low labor consumption and water consumption and provides improved quality.

Description

technical field [0001] The invention relates to the technical field of rice planting, in particular to a method for dry direct seeding sprinkler irrigation of rice in unchecked fields on hillsides. Background technique [0002] my country is a water-poor country with a large population. People's daily water use and industrial and agricultural production water continue to increase, and the contradiction of water shortage is becoming increasingly prominent. Taking the Sanjiang Plain of Heilongjiang Province as an example, two-thirds of the paddy fields are irrigated by well water. In the early 1990s, the depth of drilling a well was not more than 20 meters, which was enough for centrifugal pumping. In the past 10 years to 2000 The depth of the well was increased to 70-100 meters, and submersible pumps were replaced. Overexploitation of groundwater in the long run will have unimaginable consequences. The Sanjiang Plain, which is very rich in water resources, can completely repl...

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problems of large amount of labor, waste of water and difficulty in quality improvement existing in the existing rice cultivation process, the present invention provides a method for direct-seeding and spraying irrigation of rice in hilly and sloping fields without cells