不同环境对出口鸟饲谷穗长度影响的研究

Effect of Different Conditions on the Spike Lengths in Millet

本文试验了密度、追肥、多效唑对出口鸟饲品种谷穗长度的的影响．其结果为：（１）０．６６７ｋｍ２留苗４、５、６、７、８万株，２２．２ｃｍ以上大穗率依次为：８２．８％、６５．２％、５８．０％、５０．６％、４７．４％．（２）以不追肥的为对照，拔节期追施１０、２０、３０ｋｇ尿素，２２．２ｃｍ以上的大穗率依次提高３．１％、９．３％、１２．５％．（３）用多效唑拌种或在苗期、拔节期、孕穗期喷施，较对照２２．２ｃｍ以上的大穗率依次提高２４．５％、２６．６％、２２．５％、１８．１％．浓度为１００ｍｇ／Ｌ、２００ｍｇ／Ｌ、３００ｍｇ／Ｌ、４００ｍｇ／Ｌ，２２．２ｃｍ以上的大穗率依次提高１０．１％、１７．１％、２８．３％、３６．４％．

Effect of different densities,applied fertilizer and sprayed ppke lengths in millet was studied in this paper.The results showed that the percentage of spikes over 22.2cm were 82.8%,65.2%,58.0%,50.6% and 47.4% for the densities of 60,75, 90,105,and 120 plants/m2,respectively;3.1%, 9.3 %,12.5% increased for fertilizer application of 10,20,and 30kg at jointing stage;24.5%,26.6%,22.5%,18.1% increased for spraying pp333 at sowing, seedling,jointing and booting stages;10.1%,17.1%,28.3%, 36.4% increased for spraying concentration of 100,200,300 and 400mg/1,respectively.