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水稻免耕抛秧比常耕抛秧,从生育特点看,立苗慢,前期生长缓慢,耗养少,低节位分蘖优势明显,根系发生早、根量大、横向分布宽且均匀,纵向分布较浅,后期绿叶多,产量性状结构协调。从生理生态特性看,根系活力强,叶面积指数稍高,部分生理指标优于常耕抛秧。土壤理化性状有好于常耕抛秧田的趋势。在配套栽培技术方面要选大孔径塑盘育秧,留桩高度不超过15 cm,抛秧叶龄3.5~4.5叶,抛秧密度增加10%左右,施肥方法为氮肥基肥占20%~30%,促蘖肥和壮蘖肥50%,穗粒肥20%~30%。要发展稻草还田免耕抛秧、免耕稻养鸭与养鱼、免耕直播、冬种绿肥还田免耕抛秧、免用除草剂免耕抛秧等模式,进一步提高免耕抛秧稻的种植效益。
The no-tillage and throwing-seedling throwing rice than the normal tillage throwing, from the characteristics of reproduction, standing seedlings slow, early growth slow, low consumption, low node tillering obvious advantages, root early, the amount of large, horizontal distribution and uniform, vertical Shallow distribution, late green leaves and more yield traits coordination. From the perspective of physiological and ecological characteristics, root vigor, leaf area index slightly higher, some of the physiological indicators better than the constant tillage throwing. Soil physical and chemical properties are better than the constant tillage throwing seedling trend. In supporting cultivation techniques to choose large aperture plastic plate seedling, leaving the pile height of not more than 15 cm, throwing leaf age 3.5 to 4.5 leaves, throwing seedling density increased by about 10%, fertilization method for nitrogen fertilizer accounted for 20% to 30% Tiller growth and tillering fertilizer 50%, grain fertilizer 20% to 30%. No-tillage and throwing rice straw to the development of non-tillage, no-tillage duck and fish farming, no-tillage direct seeding, no-tillage throwing green seedling returning seedling throwing, no-herbicide no-tillage throwing and other modes to further improve the no-tillage throwing seedlings Planting benefits of rice.