关键词: 坝上高原, 坝上高原, 退耕还草, 经济效果, 旱砂地, 旱滩地

Abstract: The experiments were conducted in the south of Henan, the main rapeseed production area, which were with respective applying phosphor seed manure 15kg/hm2, 45kg/hm2, 60kg/hm2and without any of it in order to study the phosphor seed manure of application rate and effect in terms of no tillage direct seeding, and supply necessary technologies to it. The results showed as the application rate of it increased, others increased too. such as: the seedling height 10.41%, diameter of root base 28.89%, leaf area per plant 22.29%, No.first branches add from 4.5 to 6.8, No. second branches add from 2.4 to 3.3, siliquae per plant 118.57%, seeds for siliquae 18.29%, while the weight of 1000-seed decreased with the increase of application rate, but the weight was striking high than CK in 15kg/hm2. the yield in a limited range improved, the growth period extended 6 days. It made rapeseed growing in autumn and strong in winter, also having great effect on the yield after applying phosphor seed manure to the rape of no tillage direct seeding. The best application rate of phosphor seed manure should be 30 kg / hm2, the rapeseed yield increased by 51.78%.