Research Of High Yield And Superiority Trait Technology That Suit The Potato Autumn Crop Production In The Mountain Areas Around Sichuan Basin

Planting potato of No-tillage and Straw-covering is a new convenient planting technology.It can save power and work. It can be easy to operate and save cost and raise efficiency. Thispaper aims to explore technical potentialities of quantity and yield for straw-covering the potatoautumn crop production under the ecological environment of the mountain areas around SichuanBasin. to explicit effect of No-tillage and Straw-covering and routine planting technology ongrowth and yield and trait of potato, and find the high yield and superiority trait technology thatsuit the potato autumn crop production in the mountain areas around Sichuan Basin. The testresearch the effect of the whole potato-sowing and potash fertilizer and Straw-covering on thegrowth of the potato autumn crop production in the mountain areas around Sichuan Basin,Manifest:1. Both of the whole potato-sowing and applying potash fertilizer can advance the emergenceof potato-seedling, straw-covering can obviously delay the emergence of potato-seedling. Thewhole potato-sowing, not applying potash fertilizer, straw-covering can prolong the period ofgrowth. The cut potato-sowing, straw-covering can remarkably decree the rate of emergence,while applying potash fertilizer can rise the rate of emergence. The height of potato in thestraw-covering and the whole potato-sowing is higher than that of potato in other treats. Thereare different effects of applying potash fertilizer on height during the formation period of tuberin the earlier formation stage of tuber, The height of applying potash fertilizer is higher thanno-applying potash fertilizer, but in the latter formation stage, the station will turn into itsopposite. There are not obvious effect of different measure on branches of potato. Both of thewhole potato-sowing and applying potash fertilizer can raise thick of stem, whilestraw-covering has litter effect on thick of stem. The applying potash fertilizer andstraw-covering can bigger area of leaves, raise the content of chlorophy.2. Dry matter of stem and dry matter of leaf adopting he whole potato-sowing, applyingpotash fertilizer and straw-covering treat is higher than adopting other treats in differentgrowth period, but straw-covering can obviously improve the accumulation of leaf's drymatter in the ripe period. The distribution of dry matter in stem and leaf gradually decrease withthe lapse of the growth period. In the earlier period, The distribution of leave's dry matter come up to 56.70ï¼….which is the maximizing, while the rate of distribution of stem's dry matter reach to85ï¼…in the harvest. The content change of dry matter in plant and in tuber follows logistic curve.and imitate is very good.3. The applying potash fertilizer and straw-covering can obviously raise yield. It reached to0.01 prominence level. In the experiment, the effect of the whole potato-sowing and the cutpotato-sowing on yield is not prominence. The method of adopting simultaneouslystraw-covering, the whole potato-sowing and applying potash fertilizer make the highest yield,the yield can come up to 877.74kg/667m~2, it is higher 321.91 kg/667m~2 than the method of thewhole potato-sowing, no-straw-covering and no-applying potash fertilizer, the extent ofincrassation reach 57.91ï¼…. The applying potash fertilizer can increase the number of tuber. Atthe same time, it can raise the rate of the big or middle potato. Both of the wholepotato-sowing and straw-covering have not notably influence on the number of tuber, whilestraw-covering can raise the rate of the big or middle potato. The whole potato-sowing and thecut potato-sowing have not remarkable effect on the number of tuber and the rate of the big ormiddle potato.4. In the whole growth period, the content of the reducing sugar in tuber is higher. If adoptingthe whole potato-sowing, straw-covering and applying potash fertilizer treat. The differenttreats the change trend of the content of the reducing sugar in stem and in tuber is the same, thecontent of the reducing sugar in stem is the highest during different growth period, the next isleaves and the lowest content is tuber, the whole potato-sowing, straw-covering and applyingpotash fertilizer technology raise the content of the reducing sugar, and these treats are beneficialto raising the content of starch in tuber, the extent of incrassation are respectively 3ï¼…, 4ï¼…,2ï¼…. The content of the starch in tuber raised with the lapse of the growth period under thedifferent treats, The change trend of the content of the starch in leaves is double- pinnaclechange of "raising-decreeing-raising-decreeing". The change trend of the content of the starchin stem is double-pinnacle change of parabola.