A method for precise water management of machine-transplanted rice seedlings

Abstract

A precise water management method for machine-transplanted rice seedlings, which belongs to the field of agricultural technology. The method is applicable to various machine-transplanted rice seedlings whose leaf age is less than 3.5 at the time of transplanting. Type and seedling-raising substrate, determine the volumetric water content index and watering amount of seedling soil and seedling-raising substrate that seedlings at different leaf ages need to be watered, realize precise water management at the seedling stage of machine-transplanted rice, and cultivate strong machine-transplanted seedlings. Compared with the machine-transplanted seedlings cultivated by conventional water management, the machine-transplanted seedlings cultivated by the present invention have strong physiological activity, heavy seedling dryness, more new roots after transplanting, rapid increase in seedling weight, more spikes, and high seed setting rate, which solves the problem of In the process of machine-transplanted seedlings, due to the lack of clear watering indicators, the seedlings are not strong, dead seedlings, slow-moving after transplanting, and insufficient number of effective panicles, etc., can effectively increase the yield of machine-transplanted rice, and the yield can be increased by 9.06 %~12.13%.

Description

technical field [0001] The invention belongs to the field of agricultural technology, and relates to a method for precise water management at the seedling stage of machine-transplanted rice, in particular to determining the volume content of seedling soil and seedling matrix that need to be watered at different leaf ages according to the type of seedling soil and seedling matrix. Water quantity index and watering quantity, a method for cultivating machine to transplant strong seedlings. Background technique [0002] Machine-transplanted rice refers to a rice farming method in which seedlings are transplanted with a rice transplanter. Machine-transplanted rice is also called machine-transplanted rice or machine-transplanted rice (Shen Chao et al., 2014; Sun Ruyin et al., 2014; Guo Chunnian, 2017). Rice machine transplanting has changed my country's rice production method of "facing the loess and back to the sky, bending back for thousands of years", relieved the heavy coolie...

AI Technical Summary

Problems solved by technology

Therefore, the water control methods and indicators at the seedling stage of dry-raised seedlings cannot be used for water management at the seedling stage of machine-transplanted rice

In the past, there were also some technical standards or patents related to rice irrigation (Jiangsu Agricultural Water Conservation and Rural Water Supply Technology Association, etc., 2016; Yang Jianchang et al., 2010, 2013, 2015), but these standards or patents were only used in the field after transplanting rice. period irrigation, and cannot be used for water management of machine-transplanted rice seedlings

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