Title: Effects of Nitrogen Fertilizer and Density on Population Characteristics and Yield Components of Precision Rice Hill-Direct-Seeding
Abstract: To investigate the effects of different nitrogen fertilizer and density on population characteristics and yield components of precision rice hill-direct-seeding,the new hybrid japonica rice combination Huayou 14with high-yield and good-quality was used as the experimental subject.The results showed that different nitrogen fertilizers had significant effects on rice growth duration,chlorophyll relative content,leaf area index,the dry matter weight of population,the panicle and grain structure and yield, compared with control(N0).The theoretical and actual yield of the rice treated with 300kg/hm2 of nitrogen was up to 12.93t/hm2 and 11.59t/hm2,respectively.The density experimental result showed that the chlorophyll relative content of the rice at 28.65million hills per hectare(DHJ14and KZH14)was higher.The leaf area index of the rice at 40.50million hills per hectare(DHJ10and KZH10)was higher. When the density was 28.65million hills per hectare(DHJ14),the dry matter accumulation weight of therice during seedling,elongation,heading and maturity,and the actual yield were highest with 10.07t/hm2, followed by the density of 22.20 million hills per hectare(DHJ18)with a yield of 9.99t/hm2.The optimized process making the rice get higher yield are with a density of 28.65million hills per hectare(row plating distance 25cm×14cm)and application of 225~300kg/hm2 nitrogen fertilizer.
Publication Year: 2014
Publication Date: 2014-01-01
Language: en
Type: article
Access and Citation
AI Researcher Chatbot
Get quick answers to your questions about the article from our AI researcher chatbot