为寻找一种有效降解稻米农药残留的方法以集成稻米的安全生产技术,以当地主导优质水稻为试材,通过引进的一种氨基酸有机肥,研究其施用对促进稻米农药残留降解的影响。结果表明,该氨基酸有机肥在水稻生产中于水稻返青期、抽穗前5 d平均...为寻找一种有效降解稻米农药残留的方法以集成稻米的安全生产技术,以当地主导优质水稻为试材,通过引进的一种氨基酸有机肥,研究其施用对促进稻米农药残留降解的影响。结果表明,该氨基酸有机肥在水稻生产中于水稻返青期、抽穗前5 d平均分两次,每次4 500 m L·hm^(-2),100倍兑水稀释后喷施,总用量9 000 m L·hm^(-2)能实现农药残留未检出;品种差异而言,德优4727、川优6203生产中总用量为5 400 m L·hm^(-2)(每次2 700 m L·hm^(-2),167倍兑水稀释后喷施)时即能实现农药残留未检出;而宜香优2115、F优498生产中施用量需要达到9 000 m L·hm^(-2)(每次4 500 m L·hm^(-2),100倍兑水稀释后喷施)时才能实现农药残留未检出。因此,该有机肥能够有效促进稻米中农药残留降解,可用于优质稻生产中降解农药残留。展开更多
[Objective] In order to cultivate seedlings that are adaptable to farming system and transplanter, the technology for transplanting potted-tray grown rice seedlings with machine was introduced and studied. [Method] Th...[Objective] In order to cultivate seedlings that are adaptable to farming system and transplanter, the technology for transplanting potted-tray grown rice seedlings with machine was introduced and studied. [Method] The transplanter-spe-cific seedlings were cultivated with potted-tray, bowl-shaped blanket tray and soft plastic flat plate respectively. The seeding rate and 20-50-day-old seedling height were investigated for the 3 sowing patterns. After the transplanting, the missing transplanting rate, upright seedling rate, seedling injury rate and green-returning pe-riod were investigated. [Result] Nursing seedlings with potted-tray had the advan-tages of saving seeds, high sowing precision, high seedling rate and high seedling rate. The 20-40-day-old seedlings had relatively high leaf age, seedling height and root number. However, 40 d after the transplanting, the growth of seedlings was slowed. The quality difference was smal est among the 20-day-old seedlings that were nursed with 3 different patterns, but since then the quality advantage of pot-ted-tray grown seedlings had been more and more prominent. There was smal dif-ference in quality among the 30-day-old seedlings. However, for the seedlings that were older than 40 d, the transplanting quality of potted-tray grown seedlings was higher than that of bowl-shaped blanket tray grown seedlings and soft plastic flat plate grown seedlings. In addition, the green-returning period of the potted-tray grown seedlings was significantly shortened. [Conclusion] Compared to the bowl-shaped blanket tray grown seedlings and soft plastic flat plate grown seedlings, the potted-tray grown seedlings were more suitable to transplant by machine in the wheat-rice double cropping areas of Chengdu Plain.展开更多
文摘为寻找一种有效降解稻米农药残留的方法以集成稻米的安全生产技术,以当地主导优质水稻为试材,通过引进的一种氨基酸有机肥,研究其施用对促进稻米农药残留降解的影响。结果表明,该氨基酸有机肥在水稻生产中于水稻返青期、抽穗前5 d平均分两次,每次4 500 m L·hm^(-2),100倍兑水稀释后喷施,总用量9 000 m L·hm^(-2)能实现农药残留未检出;品种差异而言,德优4727、川优6203生产中总用量为5 400 m L·hm^(-2)(每次2 700 m L·hm^(-2),167倍兑水稀释后喷施)时即能实现农药残留未检出;而宜香优2115、F优498生产中施用量需要达到9 000 m L·hm^(-2)(每次4 500 m L·hm^(-2),100倍兑水稀释后喷施)时才能实现农药残留未检出。因此,该有机肥能够有效促进稻米中农药残留降解,可用于优质稻生产中降解农药残留。
基金Supported by the Key Project of the National Twelfth-Five Year Research Program of China(2011BAD16B05,2012BAD04B13)Special Fund for Agro-scientific Research in the Public Interest(201303129)+1 种基金Research Foundation from Ministry of Agriculture of ChinaSichuan Province Science and Technology Support Program,China(2010NZ0093)~~
文摘[Objective] In order to cultivate seedlings that are adaptable to farming system and transplanter, the technology for transplanting potted-tray grown rice seedlings with machine was introduced and studied. [Method] The transplanter-spe-cific seedlings were cultivated with potted-tray, bowl-shaped blanket tray and soft plastic flat plate respectively. The seeding rate and 20-50-day-old seedling height were investigated for the 3 sowing patterns. After the transplanting, the missing transplanting rate, upright seedling rate, seedling injury rate and green-returning pe-riod were investigated. [Result] Nursing seedlings with potted-tray had the advan-tages of saving seeds, high sowing precision, high seedling rate and high seedling rate. The 20-40-day-old seedlings had relatively high leaf age, seedling height and root number. However, 40 d after the transplanting, the growth of seedlings was slowed. The quality difference was smal est among the 20-day-old seedlings that were nursed with 3 different patterns, but since then the quality advantage of pot-ted-tray grown seedlings had been more and more prominent. There was smal dif-ference in quality among the 30-day-old seedlings. However, for the seedlings that were older than 40 d, the transplanting quality of potted-tray grown seedlings was higher than that of bowl-shaped blanket tray grown seedlings and soft plastic flat plate grown seedlings. In addition, the green-returning period of the potted-tray grown seedlings was significantly shortened. [Conclusion] Compared to the bowl-shaped blanket tray grown seedlings and soft plastic flat plate grown seedlings, the potted-tray grown seedlings were more suitable to transplant by machine in the wheat-rice double cropping areas of Chengdu Plain.
