发苗肥与发苗水层对再生稻发苗和产量的影响

【目的】探究再生稻发苗肥施量与发苗水层。【方法】以黄华占为试验材料,对发苗肥(头季收获后2 d撒施的肥料;尿素F0:0 kg/hm^2、F1:112.5 kg/hm^2、F2:225 kg/hm^2)和发苗水层(头季收割后15 d内田间的水层;W0:0 cm、W1:2 cm、W2:4 cm、W3:6 cm)进行裂区试验。【结果】F1、F2处理的苗桩比(再生苗数/稻桩数)、再生苗数、再生季产量均显著高于F0,涨幅分别为6.71%~9.40%、10.87%~15.33%、19.33%^20.20%。穗桩比(齐穗期穗数/稻桩数)表现为F2、F1处理均高于F0处理,其中F2处理显著高于F0处理。W2处理的穗桩比最高,W1、W2、W3处理的苗桩比、再生苗数、再生季产量均高于W0处理,其中W2处理的产量比W0处理高13.88%,达到显著水平。发苗肥和发苗水层均能改善再生季发苗环境,提高出苗速度和数量,但是发苗肥的作用更加显著。【结论】发苗水层对黄华占再生季发苗和产量均有一定程度的提高,发苗肥能显著提高黄华占再生季发苗和产量,水肥耦合效应下W2F1处理综合效益最佳。

再生季高粱促芽肥及发苗肥施用研究初报

通过再生高粱促芽肥施用时期、施用量及发苗肥施用量对产量及产量构成因子影响的研究 ,初步摸索出了再生高粱促芽肥的最佳施用时期为头季收获前 10～ 15d ,促芽肥及发苗肥的最佳施肥量均为 10kg/6 6 7m2 。

不同促芽肥和发苗肥施用量对准两优527再生稻产量的影响

本文通过不同促芽肥和发苗肥的施用量进行试验,研究其对再生稻产量的影响。结果表明,A3B2(促芽肥用尿素20kg/667m2,发苗肥用尿素10kg/667m2)的实际产量(486.3kg/667m2),促芽肥施用尿素15-20 kg/667m2,发苗肥施用尿素10-15 kg/667m2为宜。

Effect of trace elements on growth of Pinus tabulaeformis seedling

The stimulative effect of trace elements on seed germination and seedling growth of Pinus tabulaeformis was tested. The experiments were carried out on seed soak and topdressing with different trace elements and varied concentrations at the nursery of Gardens Research Institute, Harbin, in 2000-2001. The experimental results showed that soaking seed with 1% and 0.2% concentrations of Mn element produced best result for seed germination, and the germination rate was increased by 9%~19% for the seeds treated with 1% concentration and 12%~14% for the seeds treated with 0.2% concentration compared with the control group. The seeds treated with boron element had lowest germination rate. For trace element topdressing, Mn and Mo elements presented good result for seedling growth and the treatment with low concentration was even better. The height or chlorophyll content of the seedlings with spray of low-concentration Mn and Mo element was much higher than that of untreated ones. In the contrast to the treating method of seed soak, topdressing (application of spraying on foliage) had evident effect on seedling growth.

The Application of Seedling Nursing on Moist Trays and Fermentation Heating Using Farmyard Manure Methods in High-altitude Tobacco Areas of Fenggang County

To solve the problems of long seedling culture time and poor quality of tobacco seedlings bred by floating culture technique of seedlings in high-altitude tobacco areas, a comparative trial between seedling nursing on moist trays ＋ fermentation heating using farmyard manure and conventional floating culture of seedlings in Fenggang County was carried out in 2013. The results showed that seedling nursing on moist trays ＋ fermentation heating using farmyard manure can improve 4-5 ℃ of pool water temperature, shorten 8 d of seedling age, increase 4.45 cm of seedling height, thicken 0.46 cm of stem girth and make lateral root system developed. The method can shorten the time of floating breeding of flue-cured tobacco,improve the quality of tobacco seedlings, thus it was suitable to popularize in highaltitude tobacco areas of Fenggang County.

一栽两收话种茄

一栽两收话种茄陈钦，陈银钦采用“冬育壮苗一栽两收”的方法种植茄子，能使茄子两头卖好价，经济效益好，深受种植者与消费者的欢迎。现将这种栽培方法介绍如下，供各地菜农学习应用和借鉴参考。－、冬育壮苗１．育苗时间。以“立冬”至“小雪”期间播种育苗为宜。这时气...

优质杂交水稻泰优390再生季的施肥技术探究

以优质杂交水稻品种泰优390为试验材料,设再生季促芽肥和发苗肥两因素3个水平,采用随机区组设计,对再生季施用促芽肥和发苗肥的效果进行了研究,结果表明,在不同的施肥处理中,施肥水平为促芽肥7.5 kg/亩,发苗肥5.0 kg/亩的情况下,小区平均产量最高。产量构成因素对产量的贡献率表现为有效穗>实粒数>千粒重。