Precise management method of moisture in tillering stage of rice plant after wheat straws are returned to field

A management method and rice technology, applied in the agricultural field, can solve the problems of strong reducibility of paddy fields and failure of rice seedlings to grow.

Active Publication Date: 2013-09-04
YANGZHOU UNIV
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Problems solved by technology

[0004] The present invention mainly solves the problem of strong reducibility of rice fields and no seedling growth after straw returning to the field, improves soil permeability, and promotes a precise irrigation method for tiller and

Method used

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  • Precise management method of moisture in tillering stage of rice plant after wheat straws are returned to field
  • Precise management method of moisture in tillering stage of rice plant after wheat straws are returned to field
  • Precise management method of moisture in tillering stage of rice plant after wheat straws are returned to field

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Embodiment

[0036]In 2010-2012, japonica rice varieties and indica rice varieties were used in Yangzhou, and japonica rice varieties were used in Lianyungang to carry out the precise water management experiment of rice straw returning to the field (referred to as precise water management) at the tillering stage, and the shallow water layer was kept as the control. Except for the different water management methods in the tillering stage, the precise water management and the control are completely consistent in other cultivation measures, such as seedling raising, planting density, fertilization period and amount, and pest control. The results showed that compared with the control, the precise water management method significantly increased the oxidative power of rice roots at the tillering stage, the number of tillers and the dry weight of seedlings (Table 1-2); the yield increased by 8.1-18.2%, and the irrigation water decreased by 10.4-25.5% %, irrigation water use efficiency increased by...

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Abstract

The invention belongs to the field of agricultural technology, and relates to precise irrigation in the tillering stage of rice plants after wheat straws returned to field, in particular to a precise management method of moisture in the tillering stage of rice plants after wheat straws are returned to the field. The management method of moisture in the tillering stage of rice plants after wheat straws are returned to the field determines irrigation indexes according to corresponding quantity of the wheat straws returned to the field and soil types, and comprises the following steps that (1) a soil slight falling dry irrigation method is adopted under the condition that the quantity of the wheat straws returned to the field is in a range of 3-3.5t hm-2, and (2) a soil medium falling dry method is adopted under the condition that the quantity of the wheat straws returned to the field is in a range of 6-7t hm-2. The management method of moisture in the tillering stage of rice plants after wheat straws are returned to the field enables moisture supply and moisture required by growth of the rice plants to be consistent and solves the problems that the rice field is high restoring capacity and rice seedlings do not sprout after straws are returned to the field.

Description

technical field [0001] The invention belongs to the technical field of agriculture and is used for precise irrigation at the tillering stage of rice after wheat straw is returned to the field, in particular to an irrigation method for promoting early tillering of rice at the tillering stage after returning wheat straw to the field. Background technique [0002] Double cropping of rice and wheat is the most important planting system in my country's agricultural production, and returning wheat straw to the field is the most effective way to effectively utilize straw resources and fertilize the soil. However, there are two major problems after the wheat straw is returned to the field: one is that it is difficult to plow the land and plant rice; the other is that after the wheat straw is returned to the field, the rice straw decomposes and rots during the tillering stage, which makes the soil too reductive and produces organic acids and vulcanization. Toxic substances such as hy...

Claims

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Application Information

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IPC IPC(8): A01G25/00
Inventor 杨建昌陈婷婷王志琴刘立军张耗
Owner YANGZHOU UNIV
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