Study On Organized-soil Substrate Selection And Quantity Of Manure And Fertilizer Of Sweet Pepper Cultivation In Greenhouse

Aimming for the crucial problems of causing the low yield, bad quality, low economic benefits and difficult to long-season cultivation, the study using sweet pepper analyzed and discussed the effect of different organized-soil substrate, appropriate proportion, quality of manure and fertilizer in different period on cultivation and key techniques in long-season cultivation in greenhouse. This study brought forward the method which can improve the quality of soil and got the proper quantity of manure and fertilizer on sweet pepper seedling and harvest period. The primarily results are as follows.Using wheat straw, com straw, cabbage straw, mushroom residue and paring as substrate and adding to clean soil to make organized-soil cultivation substrate this study was conducted to select the proper substrate on sweet pepper cultivation. The result showed that organized-soil cultivation substrate can replace peat and vermiculite and was better than soil. After comparing the development, physiological character, fruit quality and yield of sweet pepper planted in some substrate, the result showed the sweet pepper planted in wheat straw+(human excrement+soil)+cabbage straw(4:3:3) and wheat straw+(human excrement+soil)+com straw(4:3:3) grew fine, had strong root activity and photosynthesis rate and high yield. And the fruit nitrogen content was low. The growth period lasted 10 months and the total yield was 8024kg/667m2.After comparing 4 different proportion of wheat straw+(human excrement+soil)+corn straw organized-soil substrate, the result showed the wheat strawrcom straw:cleans soil=5: 5: 3 was the best. It can improve the development of sweet pepper, the relationship between roots and leaves, the fruit quality and the yield. It can also prevent the senescence of leaves. The temperature was higher than soil about 2.5癈 one month after transplanting. The substrate density was 0.32-0.43 g/cm3, the porosity is 0.71-0.75. This substrate was fit for sweet pepper and easy to farmer to use.Using peat+vermiculite(2:l) the study was conducted to the quantity of manure and fertilizer in seedling period. After planting the seedling from 72 hole flat plate to 10*10 bowl, the available nutrition is 800g/m3, N, P2O5, K2O=1: 1: 1, the best quantity of manure and fertilizer was composite fertilizer 1500g/m3, CO(NH2>2 90g/m3, manure 4000g/m3. Under this condition the development of seedling was fine, the growth of dry matter was fast and quality was good. After 30 days the sweet pepper was transplanted to the substrate wheat strawxora strawxleans soil=5: 5: 3. The early yield was 3.9kg/m2.Using substrate wheat strawxorn strawxleans soil=5:5:3, this study was conducted to the proper quantity of manure and fertilizer in harvesting period. The growth period was 4 months and 10 days after transplanting. The best quantity was N:27-33kg/667m2 , P :2-2.2kg/667m2 , K . 12-15kg/667m2. Under this condition the temperature was high, the ability of absorbing nutrition of sweet pepper was great, the yield was 4375kg/667m2 and benefit was high.