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在亚洲南郊和东南部,能够提供每年两季水稻用水的稻田面积约占14％,其余均因水源、降雨不足,造成稻田利用率低。在灌溉区,旱季水稻收获之后,田间尚留有部分多余水分,但是要种第二季,即使是早熟品种,水的供应是不足的,象这种粘重土壤要种植旱作高梁也是有困难的。在降雨区,种植两季水稻,水分常常是充裕的,但是,再移栽一季稻,必然在肥料、农药方面付出高额的投资,而土壤水分的价值是抵偿不了这种投资的。作为充分利用稻田多余水分和提高土地再生产能力,利用水稻根、叶再生,增加水稻生产在实践上有着重要意义。我们在Maahas粘土上,围绕从种子生长的水稻(称正造)的切割高度、施肥水平、栽培密度、水浆管理和整地程度,进行了两年试验,目的在于评价不同水稻品种进行再生产培育的操作技术和影响水稻再生的农业措施。试验结果指出,在一定条件下培育再生稻是可以达到一定产量的,加之无需整地移栽,可节约劳力50—60％,并比正造节约水分60％,唯再生稻易遭绿矮病的侵染,如果将易染病毒的稻种作为再生稻栽培是冒极大风险的。
In southern and southeastern Asia, paddy fields capable of providing rice water for two seasons each year account for about 14% of the total paddy field area, with the remaining areas suffering from low water availability due to insufficient rainfall and rainfall. In the irrigated area, after the harvest of dry-season rice, there is still some surplus water in the field, but in the second season, even the precocious varieties have insufficient supply of water. It is also difficult to grow dry sorghum like this heavy-soil soils of. In raining areas, planting two seasons of paddy rice is often abundant, but transplanting of one-season paddy will inevitably entail high investments in fertilizers and pesticides, and the value of soil moisture will not be able to offset this investment. It is of great significance in practice to make full use of the surplus water in paddy field and improve the ability of land reclamation, and to use rice root and leaf regeneration to increase rice production. We conducted a two-year trial on Maahas clay about cutting height, fertilization level, planting density, water slurry management and soil preparation for seed-grown rice (Chingchow), with the aim of evaluating the reproductive development of different rice varieties Technology and Agricultural Measures Affecting Rice Regeneration. The results showed that under certain conditions, ratooning rice could reach a certain yield, which could save labor by 50-60% and save water by 60% Dyeing, if the virus-susceptible rice cultivated as a ratoon is very risky.