Authors

Abstract

Dry direct seeding cultivation technology of rice is an important aspect of rice production and management. Six treatments were designed in this paper, and that is, T1 (conventional irrigation), T2 (conventional irrigation + conditioner), T3 (30% water-saving irrigation), T4 (30% water-saving irrigation + conditioner), T5 (50% water-saving irrigation), T6 (50% water-saving irrigation + conditioner). The results showed that in the three separate irrigation treatments, 30% water-saving irrigation was conducive to the growth of dry direct seeding rice at the tillering stage, jointing and booting stage, and 50% water-saving irrigation was more conducive to the growth of rice at grain filling stage. Compared with no application of amendments, all kinds of treatments could significantly promote the growth of dry direct seeding rice. Under the condition of water-saving irrigation of 30%, higher dry matter quality, yield and nutrient absorption can be obtained. The total dry matter quality and rice yield of T4 treatment with 30% water-saving irrigation and conditioner were the highest, which were 99.90 g/pot and 37.76 g/pot respectively, compared with conventional treatment (T1) was 37.60% and 45.96% higher, and this treatment had obvious effect on nitrogen and potassium absorption. In terms of quality impact, water saving was 30% Irrigation conditions are conducive to the improvement of rice processing quality, appearance quality and nutritional quality, especially after the application of conditioner, the overall rice quality is improved. This study has a certain reference value for water-saving irrigation, promoting nutrient utilization, stable yield and high quality of dry direct seeding rice.

Abstract in Chinese

水稻旱直播栽培技术是水稻生产管理中重要方面。本文设计了６个处理，即T1（常规灌溉）、T2（常规灌溉+调理剂）、T3（节水30%灌溉）、T4（节水30%灌溉+调理剂）、T5（节水50%灌溉）、T6（节水50%灌溉+调理剂）。结果表明：单独三种灌溉方式处理中，节水30%灌溉有利于旱直播稻分蘖期和拔节孕穗期的生长，节水50%灌溉更有利于灌浆期水稻生长。相对未施调理剂处理，各种施用调理剂处理均可显著促进旱直播稻长势。节水30%灌溉条件下能够获得较高干物质量、产量与养分吸收量，其中节水30%灌溉与调理剂结合的T4处理总干物质量和稻谷产量最高，分别为99.90 g/盆、37.76 g/盆，分别较常规处理（T1）高出37.60%、45.96%，并且该处理在氮钾吸收方面均作用明显。在品质影响方面，节水30%灌溉条件有利于稻谷加工品质、外观品质与营养品质提升，尤其施用调理剂后总体稻谷品质有所改善。该研究对旱直播稻节水灌溉、促进养分利用、稳产优质具有一定参考价值。