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水稻占我区粮食总产量的60％,夺取水稻高产稳产,对全区粮食生产有重大意义。一、汉中水稻生产的生态特点水稻的高产结构不外三个途径,一是以穗多为主;一是以穗重为主;再就是以穗多为主兼顾穗重。以汉中纬度接近的两个主要稻区华东和西南为例,华东如江浙一带,实行小株密植,每亩3～4万穴,每穴3～4苗,每亩穗数30～40万,品种以农垦58、双丰1号、农虎6号、矮南早39等分蘖力强的品种为主,明显是以穗多为主导的生产方式。西南如四川一带,实行相对的大株偏稀栽培,每亩1.5万穴上下,每穴8～10株,每亩20万穗左右,品
Rice accounts for 60% of the total output of grain in our region, capturing the high and stable yield of rice, which is of great significance to grain production in the region. First, the ecological characteristics of rice production in Hanzhong Rice high-yield structure, but nothing more than three ways, one mainly to spike-based; first spike weight-based; Taking East China and Southwest China as the two major rice fields close to Hanzhong Latitude as an example, East China, such as Jiangsu and Zhejiang, practiced planting small plants at 3 to 40,000 acre and 3 to 4 plants per hole at a rate of 300,000 to 400,000 per acre. Varieties with Nongken 58, Shuangfeng No. 1, Nonghu 6, short south as early as tillers and other tillering-based varieties, obviously spike-dominated production methods. Southwest, such as Sichuan area, the implementation of relatively large plant partial thin cultivation, per acre up and down 15,000 points, each hole 8 to 10 strains, about 200000 acres per acre