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An irrigation method to promote assimilate transport and grain filling in post-anthesis stems of rice

An assimilation, post-flowering technology, applied in the agricultural field, can solve the problems of low running volume, low seed setting rate and low grain weight

Active Publication Date: 2017-09-19
YANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention mainly solves the problems of less amount of photosynthetic compound transporting to grains in rice stems after flowering, low seed setting rate and grain weight

Method used

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  • An irrigation method to promote assimilate transport and grain filling in post-anthesis stems of rice
  • An irrigation method to promote assimilate transport and grain filling in post-anthesis stems of rice
  • An irrigation method to promote assimilate transport and grain filling in post-anthesis stems of rice

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Embodiment

[0048] In 2013-2014, the local high-yielding japonica rice variety Wuyunjing 24 and the super hybrid indica variety Yangliangyou 6 were selected in Yangzhou (the two varieties were sold by Yangzhou Golden Land Seed Industry Co., Ltd.), and the high-yielding japonica rice variety Lianjing 7 was used in Lianyungang. No. (Jiangsu Wofeng Seed Industry Technology Co., Ltd. sells) carries out the field test of the irrigation method (new irrigation method for short) of the present invention's promotion of assimilate translocation and grain filling in the stem after flowering of rice, with local conventional irrigation (maintaining the water layer in the early stage of filling) , interstitial moist irrigation in the middle and late stages of grouting, and water cutoff 1 week before harvest) were used as controls. Except for the water management method from flowering to maturity, the new irrigation method and the control are completely consistent in other cultivation measures, such as s...

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Abstract

The invention belongs to the field of agricultural technology and is used for irrigation from flowering to maturity of rice, in particular to an irrigation method for promoting the transfer of assimilates in rice stems to grains after flowering and grain filling. The method is to determine the leaf water potential index or soil water content index that needs to be irrigated according to the filling time and soil type, from flowering to 15 days after flowering, from 16 days to 30 days after flowering, and from 31 days after flowering to maturity. For precise moisture management. The invention solves the problems of modern high-yield rice varieties, especially super hybrid rice varieties with large panicle type, or the light assimilation compound in rice stems transporting less to grains, slow grain filling and low seed setting rate under high nitrogen level.

Description

technical field [0001] The invention belongs to the field of agricultural technology, and is used for irrigation from flowering to maturity of rice, in particular to an irrigation method for promoting the transfer of assimilates in stems of rice after flowering to grains and grain filling. Background technique [0002] Rice grain filling is the final stage of yield formation, and the quality of grain filling directly determines the level of grain weight and yield. The photosynthetic products required for grain filling of cereal crops come from two aspects: post-flowering photosynthesis and assimilates (mainly starch and soluble sugars) stored in the stem (stem + leaf sheath) before flowering. The assimilates stored in the stem before anthesis are not only a part of the grain filling material, but also an important material basis for the initiation of grain filling. The transport rate and amount of the assimilate affect the grain filling rate, and then affect the grain weight...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01G25/00
CPCA01G25/00
Inventor 杨建昌张伟扬王志琴张耗
Owner YANGZHOU UNIV