Experimental Study on Water Saving of Large-scale Mechanized Paddy Field Production Process in Heilongjiang Province  

作　　者：Jingfang XUE Shuqiang CHEN Yongsheng CAI Xiaodong DU Limin YANG Haixin ZHAO Tong ZHOU Mingxu ZHOU Linan WANG 

机构地区：[1]Rice Research Institute,Heilongjiang Academy of Agricultural Sciences/Scientific Observation and Experimental Station of Cold Damage of Japonica Rice in Cold Region,Ministry of Agriculture and Rural Affairs,Kiamusze 154026,China

出　　处：《Agricultural Biotechnology》2021年第1期120-125,共6页农业生物技术（英文版）

基　　金：Supported by Natural Science Foundation of Heilongjiang Province(LH2019C063);National Key R&D Program(2016YFC0400108-3);Heilongjiang Provincial-level Project of National Science and Technology Major Project(GX17B010);Heilongjiang Provincial Postdoctoral Research Startup Fund(LBH-Q15134);lHeilongjiang Provincial Leading Talent Echelon Reserve Leader Project(2017);Academy-level project of Heilongjiang Academy of Agricultural Sciences(2018KYJL021);Heilongjiang Provincial Modern Agricultural Industry Technology Cooperative Innovation Extension System(2019)。

摘　　要：In order to clarify the water-saving technologies and standards in large-scale mechanized production of paddy fields, the water-saving effects and cost-benefit situations of paddy field steeping, seedling transplanting and different land preparation methods were studied. The results showed that the suitable water layer height for the closing period of mechanized operation was 10 cm, which could save water, facilitate weed control, and lead to better effect and the highest yield. The treatment with a water layer height of 1 cm(Huadashui) for the seedling planting operation achieved better quality of seedling transplanting, lower vacancy rate and higher yield and was water-saving. From the perspective of saving water and taking into account the cost of land preparation, the method of steeping and beating the field was better than the method of plowing in autumn and rotary tillage and harrowing in spring, but it was very prone to lodging. From the perspective of high yield creation, the method of plowing in autumn and rotary tillage and harrowing in spring was significantly better than the method of steeping and beating the field. In order to reduce the cost of land preparation, it is recommended to change the way of plowing in autumn and rotary tillage and hallowing in spring to plowing in autumn and rotary tillage in spring or plowing and hallowing in spring to reduce the cost of one time of rotary tillage, and to simultaneously realize deeper plough layer, which is conducive to preventing lodging and obtaining high yield.

关 键 词：Rice Field steeping Transplanting seedlings Tillage and land preparation method Plowing in autumn and rotary tillage and harrowing in spring Steeping and beating the field in spring 

分 类 号：S233.71[农业科学—农业机械化工程]