Effects of Sowing Time, Density and Fertilizer Application on the Economic Characters of Zhuoyou 058

In order to study the high-yield cultivation techniques of Zhuoyou 058,the single-factor test design method was applied to study the effects of sowing time,density,and fertilizer application on plant traits,yield traits and yield.The results showed that with the delay of sowing,the plant height and the first branch height decreased,the whole growth period was shortened,and the yield was the highest at 197.50 kg/666.7 m^2 in the treatment of sowing on October 1,so the most suitable sowing date should be before October 9.With the increase of the planting density,the plant height and the first branch height increased,the yield traits decreased significantly,and lodging occurred.The yield per unit area was the highest at 201.44 kg/666.7 m^2 under the density of 12 000 plants/666.7 m^2,and the lowest at 155.47 kg/666.7 m^2 under the density of 6 000 plants/666.7 m^2.Therefore,the best density was 9 000-15 000 plants/666.7 m^2.As the fertilizing amount increased,the plant height,the first branch height,the number of effective branches and the number of effect pods all increased,and the yield was the highest at 194.93 kg/666.7 m^2 under the fertilizing amount of 50 kg/666.7 m^2,and the lowest at 135.16 kg/666.7 m^2 under the fertilizing amount of 30 kg/666.7 m^2.The gross profit was the highest at 854.20 yuan/666.7 m^2 under the density of 12 000 plants/666.7 m^2,and the second highest at 836.65 yuan/666.7 m^2 under the fertilizing amount of 50 kg/666.7 m^2.The best fertilizing amount should be 40-50 kg/666.7 m^2 in cultivation.

Seed Propagation Technology and Quality Standards of Zhuoyou 1032

The breeder’s seeds of 56 A are produced through individual selection,sib mating in pairs and selection in isolation zone(net) plant line nursery.The foundation seeds are produced by isolated propagation of the breeder’s seeds,and the sterile line seeds for field production are produced by isolated propagation of the foundation seeds.The breeder’s seeds of restorer line 8020 R are produced by bagging and selfing and selection in isolation zone(net) plant line nursery,and the foundation seeds are produced by re-propagation.The hybrid seed production requires better isolation conditions,which can be realized using natural forests,mountains,rivers,roads(railways,highways),houses,etc.,and the isolation distance in open areas is equal to or larger than 800 m.It also requires early sowing of the male parent,so that the male parent can make full use of the light and temperature resources before winter to grow vegetatively,forming strong male parent plants that can provide more pollen.The seeds of the male parent are sown on September 8-10,and those of the female seeds are sown on September 12-16.Quality test is conducted during breeding and seed production in accordance with relevant national standards.The purity standards of the parent seeds are as follows: purity≥99%,neatness≥98%,germination rate≥80%,moisture≤9%,glucosinolate content≤20 μmol/g,and erucic acid content≤0.5%;the quality standards for parental field production seeds are as follows: purity≥98%,neatness≥98%,germination rate≥80% and moisture≤9%;and quality standards for hybrid seeds: purity≥85%,neatness≥98%,germination rate≥80% and moisture≤9%.