Sowing And Phosphorus Ratio On Canola Yield And Quality Of Forage Quality

In this paper, canola Qingza No.6 as materials, sowing period, the amount of nitrogen, phosphorus content of experimental factors, the effects of different sowing date and different nitrogen and phosphorus fertilizer on canola growth, yield, quality Forage quality of forming plant and aims to clarify the different sowing dales and different nitrogen and phosphorus ratio of rapeseed plant growth, dry matter accumulation, yield and quality formation and mechanism of nutrient absorption and quality formation of forage for Yin Mountain Region canola oil with grain, stems and leaves of Silage provide a theoretical basis and technical guidance. The main findings are as follows:(1) Different sowing oilseed rape growth and development, plant dry weight have different effects. With the push of sowing, the total fertility days canola shortening, plant dry matter accumulation, NPK. content, crude fat, fiber neutral, acidic fiber, crude ash content increased with delayed sowing while showing a gradual decreasing trend and the plant protein content tended to increase. Suitable for early sowing seedlings and more conducive to extended growth period, to improve the yield and quality of spring rape advantageous. In this test, Yinshan Mountain area suitable for sowing in spring rape before May 20 is appropriate.(2) Tests showed that with the increase of nitrogen application, rapeseed plant dry weight, plant yield, plant height, branching height of the starting point and the main inflorescence length, once effective branches, effective secondary branches, plant effective angle If the number of pods per plant grains, grain weight and other yield components showed an upward trend; plant and leaf NPK content, plant and grain protein and crude fiber content increased, while plant fat, crude ash, grain oil content, erucic acid and glucosinolate glucoside content decreased. Rational nitrogen application will not only promote plant growth, but also help to improve canola yield and forage quality. In this test, the amount of nitrogen fertilizer should be pure N 8.2kg /667m2～12.3kg/667m2 appropriate.(3) Tests showed that with the increase in the amount of phosphorus, rapeseed plant height, dry weight, forage yield and branch starting height, the length of main inflorescence, once effective branches, secondary branches effective, efficient plant number of pods per plant, grains per pod, grain weight and other yield components showed an upward trend; plant and leaf NPK content, plant and grain protein and crude fiber content were improved; grain and oil content of glucosinolates glucosidase increased first and then decreased; while plant fat, crude ash content were decreased. The right amount of fertilizer applied to improve canola stems and grain yield and quality of forage nutritive quality favorable. Under the experimental conditions, the amount of P2O5 phosphorus fertilizer was 7.0-10.5kg/667m2 appropriate.(4) Under the experimental conditions, different ratios of nitrogen and phosphorus on growth and yield on Spring rapeseed, have different impacts quality formation. Comprehensive comparison, the ratio of nitrogen and phosphorus in combination with high fertilizer combination (N3P3, N2P3) its plant yield, grain yield, and grain protein content of the plant NPK, high oil content, and erucic acid and glucosinolate content glucosidase crude ash content lower oil fatty acid composition and better quality. The test of nitrogen and phosphorus fertilizer to N 8.2-12.33kg/ 667m2, P2O57.0-10.5kg/667m2 appropriate.