| Cite this article: | 叶 浩,黄必善,熊威,等.蓄雨灌溉对农田养分和水稻生长的影响[J].灌溉排水学报,2022,():-. |
| Ye Hao,Huang Bi-shan,Xiong Wei,et al.蓄雨灌溉对农田养分和水稻生长的影响[J].灌溉排水学报,2022,():-. |
|
| |
|
|
| This article has been：Browse 1275Times Download 0Times |
|
|
|
| DOI： |
|
| Impacts of Rainwater Storage Irrigation on Farmland Nutrients and Rice Growth |
|
Ye Hao1,2, Huang Bi-shan1, Xiong Wei1, Wang Shu-bin1
|
|
1.Tianmen Experiment Station of Farmland Irrigation and Drainage;2.Tianmen Bureau of Water Resources and Lakes
|
| Abstract: |
| 【Objective】To provide scientific basis for rain storage irragaition, the trail explored the effect of rain storage irrigation on farmland nutrients and crops.【Method】shallow water frequent irrigation was CK, based on shallow water frequent irrigation, and three kinds of rain storage upper limits (TR1-TR3, rain storage 100 mm, 80 mm, 60 mm) were designed, rain storage irrigation trail was conducted under natural conditions.【Result】The results of the two-year trail show that:①rain storage irragation has no effect on available nitrogen, available phosphorus, available potassium at the level of 5% in soil nutrients of 0-20 cm (surface soil) and 20-40 cm (deep soil); ②The surface available nitrogen of TR1-TR3 was 20.0 % higher than that of the deep soil; the surface available phosphorus was 85.0 % higher than that of the deep soil; the surface available potassium was 66.8 % higher than that of the deep soil. With the change of growth period, the surface available nitrogen of the rain storage irrigation treatment decreased gradually, and the deep soil increased gradually. Surface and deep soil available phosphorus gradually increased ; the surface and deep available potassium decreased gradually; ③There was no significant difference in effective tillering, panicle length, seed setting rate and 1 000-grain weight among the four treatments at the 5% level. 【Conclusion】Rain storage irrigation can increase surface available nitrogen, available phosphorus and available potassium, and 80 mm rain storage has the best comprehensive benefit. |
| Key words: Rice; Agronomic indicators; Rain storage irrigation; Soil nutrients |
|
|
|
|
|
|
