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Charactering of Growth and Development of Machine-Transplant Hybrid Japonica Rice and of High Yield Cultivation Technology

Author: QiaoJing
Tutor: DingYanFeng；WangShaoHua
School: Nanjing Agricultural College
Course: Crop Cultivation and Farming System
Keywords: Machined-transplanting rice Tiller emerging Tiller earbearing Nitrogen supply Quality of population
CLC: S511.22
Type: Master's thesis
Year: 2009
Downloads: 16
Quote: 2
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Abstract


In this study, Hybrid japonica rice (changyou 1) involving four experiment (density, different nitrogen supply, compare machined-transplanting hybrid japonica rice with machined-transplanting general rice and sowing densities and methods). The objectives of this study:determine the emerging and earbearing of tiller for machined-transplanting hybrid japonica rice and effects of different nitrogen supply and density on nitrogen uptake and ultization and high yield technology control; analysis characterics of tiller emerging and earbearing, uptake of nitrogen.Results showed as following:(1) Machined-transplanting hybrid japonica rice tiller mainly outgrowed 3/0、4/0、5/0、6/0、7/0 etal the first tiller and 1/3、1/4、1/5 second tillers etal middle tillers and few 2/3、2/4,spikelets rate concentrate this tiller position.With density increase, emerging and earbearing of tiller reduced. Tiller of 3/0、4/0、5/0、6/0、1/2、1/3、1/4、1/5 etal was been used and contributed to yield. The efficiency tiller was emerge and earbear that was controlled by basic seedling.(2) During the observe tiller outgrowth, three leaf one center transplant leaf position of tiller emerging was 3/0, leaf age that tiller emerging prevalently was after the sixth leaf elicited, and after transplant new two leaf come out tiller begin to outgrow, when manchined-transplanting hybrid japonica rice was leaf position of tiller emerging was 2/0, Compared with machined-transplanting general rice emerging prevalently was early one leaf birth.(3) Basic seedling was positive relate with spikelets, earbearing tiller rate, dry matter accumulation of different yield increased after heading, leaf and sheath transcolation rate of different yield increased with yield. The field of colony was adjusted and optimized by basic seedling.(4) Result that different nitrogen supply showed that under the condition of same total nitrogen, basic tiller fertilizer and tiller fertilizer ratio as 15:35(70:30), the yield was the highest. With the increasing of basic fertilizer, reducing tiller fertilizer, the basic fertilizer and tiller fertilizer utilization efficiency was different effect, the treatmeat of N3 was the highest on the basic fertilizer and tiller fertilizer utilization efficiency and total fertilizer utilization efficiency, the current of amount and percentage of nitrogen translocation from leaves and stem sheaths to panicle of rice represented augment.(5) Through the sowing denstites and methods and hormone adjusted, the quality of seedling colony was been increased. With density increase, the quality of seedling decreased, and the seedling of colony putted up different on the planting methods.

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CLC: > Agricultural Sciences > Crop > Cereal crops > Rice > Meters of sticky points > Japonica
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