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Shanxi University (2021)

Study on Mechanized Water-supplemented Transplanting Technology of Dryland Cabbage

赵圆峰

Titre : Study on Mechanized Water-supplemented Transplanting Technology of Dryland Cabbage

Auteur : 赵圆峰

Grade : Master 2021

Université : Shanxi University

Résumé partiel
Drought has become a global problem and one of the main factors restricting agricultural development.Shanxi Province is a typical arid and semi-arid area.Developing high-efficiency water-saving dry farming and improving water use efficiency is one of the important ways to alleviate the shortage of agricultural water resources in Shanxi.Cabbage is one of the main vegetables supplied on an annual basis in my country.It has extremely high nutritional value and is grown on a large scale in Shanxi Province.With the emergence of an efficient and water-saving pulse-type water-replenishing cabbage transplanter,it can accurately replenish water to the seedlings,which greatly improves the efficiency of cabbage transplanting and effectively saves water resources.In order to further quantify the agronomic parameters required for mechanical transplanting of cabbage,this paper uses field experiments to study the yield and water utilization of cabbage when it is planted under the same soil and fertility conditions with different densities,seedling ages,and water supply for transplanting.The production efficiency and economic benefits of artificial,semi-mechanical and mechanized transplanting dryland cabbage are compared through integrated agronomic technology.The main conclusions are drawn from this experimental research and analysis :(1)After 2 years of experiment,planting with different densities has a significant impact on the yield of cabbage.Among them,density 3(70500plants/hm2)has the highest yield.The yield in 2018 was(Zhonggan 301)99206 kg/hm2,and the yield in 2019 was(Worldwide).Agriculture 703)103165kg/hm2.The soil water use efficiency of the density 3(70500plants/hm2)treatment was the highest,and the performance in 2a was536.5kg/(hm2·mm)and 338.0kg/(hm2·mm),respectively.The water consumption of different treatments in 2018 is Density 3(184.9mm)>Density 2(178.1mm)> Density 1(175.1mm).The water consumption of different treatments in 2019 is Density 2(325.4mm)> Density 3(306.5mm)>Density 1(295.3mm).The influence of different densities on soil moisture is relatively large,but the change law of soil moisture at different depths is basically the same.(2)In experiment 2a of different transplanting water supplements,the survival rate of 50 ml was significantly lower than that of supplemented water100 ml,150ml and 200 ml.The highest survival rate was 98.4% and 99.6% of supplemented water 200 ml,respectively.The highest yields in 2a were95653.51kg/hm2 and 86725kg/hm2 for 200 ml of water supplement treatment ;the soil moisture changes at different depths of different water supplement treatments were not significantly different and their laws tended to be consistent.Different transplanting water supplements have no significant effect on water consumption.In 2018,the largest water consumption was188.21 m for 50 ml water supplement treatment,and the largest water consumption in 2019 was 331.46 mm for 200 ml supplement water treatment ;the difference in water use efficiency between different water supplement amounts was also Not significant.In 2018,the water use efficiency of different water replenishment treatments was 547.81kg/(hm2·mm)for 100 ml water replenishment treatment,and the highest water use efficiency was277.18kg/(hm2·mm)for 50 ml treatment in 2019.

Mots clés : Dryland Cabbage ;Transplanting with Supplementary Water ;Yield;Water Use Efficiency ;

Présentation (CNKI)

Page publiée le 25 novembre 2021