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在江苏省沿江地区麦茬上,应用2BGZ—5型耕整播种机,作少(免)耕旱直播稻的一系列高产栽培试验。直播稻营养生长期短,分蘖素质差,前中期干物质积累量低,中后期白根率高而根系活力强,每穗颖花量少。通过主攻穗大。提高个体生产力,增加每亩载花量为高产的有效途径,与此相配套的技术体系是抢时早播,实现合理基本苗,采用稳健促进的肥水管理模式,促使群体提前1.5—2.0叶龄够苗,中后期均有较大的生长量,并强化病虫草的综合防治。
In the Jiangsu Province along the Yangtze River region stubble, the application of 2BGZ-5 tillage seeder for less (free) direct-seeded rice farming a series of high-yielding cultivation experiments. The direct vegetative rice had short vegetative growth stage, poor tillering quality, low dry matter accumulation in the middle and late stages, high root activity in the middle and late stages, and strong root activity. Through the main spike. Improve individual productivity and increase the flowering rate per acre for the high yield of an effective way, and this matching technology system is prematurely seized when the time to achieve a reasonable basic seedlings, using a steady promotion of fertilizer and water management mode, prompting the population advance 1.5-2.0 leaf age Enough seedlings, both in the late growth have a greater amount, and strengthen the integrated control of disease and insect caterpillar.