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水稻早壮秧在形态和生理上均表现较大的优势。培育６～７叶多蘖壮秧的关键技术是：（１）掌握适宜的亩落谷量，杂交中籼稻２０－２５ｋｇ、中粳稻４０－４５ｋｇ。（２）苗床的培肥熟化，要达到有机质含量２．５％～３．０％，土壤容重１．０－１．２ｇ／ｃｍ￣３，孔隙度５５％。必须及早培肥，施足施全肥料，通过多次耕翻，做到肥土相融，床土疏松。（３）以土水势为指标搞好土壤水分管理。从苗床水分胁迫临界土木势测定结果看出，２．０－３．５叶秧苗耐旱能力较弱，３．５叶后耐旱能力增大。杂交中籼稻耐旱能力强于粳稻。水分调控技术是，落谷前浇足底墒水，促进齐苗。齐苗揭膜后补足水分。２．０－３．５叶期，保持床土湿润，３．５叶后以旱管为主。
As early as rice seedlings in rice morphology and physiology have shown a greater advantage. Breeding six to seven leaves more tiller strong seedling of the key technologies are: (1) to master the appropriate amount of acres of grain, hybrid indica rice 20-25kg, medium japonica 40-45kg. (2) Cultivation of seedbed maturity, to achieve organic matter content of 2.5% to 3.0%, soil bulk density 1.0-1.2g / cm ~ 3, the porosity of 55%. Must be early fertilization, Shi adequate facilities all fertilizer, through multiple tillage, so that fat soil blending, bed loose. (3) soil water potential as an indicator to improve soil moisture management. From the seedling water stress critical soil potential test results show that 2.0-3.5 leaf seedlings drought tolerance is weak, 3.5 leaf drought tolerance increases. The ability of drought resistance of mid-season indica hybrid rice is stronger than that of japonica rice. Moisture control technology is pouring water before the end of pouring enough water to promote Qi Miao. Miao Miao after the membrane make up the water. 2.0-3.5 leaf stage, to keep bed soil moist, 3.5 leaves to dry pipe based.