Improve City Of Jingmen Farmland Apply Fertilizer The Researches Of Countermeasure

This thesis is to the farmland soil fertility of Jingmen and current situation and the question exists of applying fertilizer, Have implemented the experimental study content of four respects, and make following results:1 Two of wheat rice is made down and used to it to apply fertilizer to orient and monitor the experiment familiarlyInfluence Jingmen crop of city output raise and soil nutrient balanced restraining from factor organic and fat and potassium enough input mainly. Potassium lose and lack and become Jingmen the general phenomenas of city already usually, but, phosphorus increase and has surplus trends nitrogen year by year to throw. Land for growing field crops construct potassium become Jingmen excavate cultivated land potentiality of increasing production, recover and maintain the important actions of land fertility by city already.2 straw poles are returned the field and increase the production of mechanism and increase production function is testedCan get following conclusions through this experiment:The straw contains the abundant potassium, its content can reach 14 . 9 mg/Kgs, and very easy to be come out by drip washing. After 24 hours the drip washing in the laboratory , the potassium in the straw is nearly all washed off. In testing in the land for growing field crops, through 69 of straw of one month. 1% of the potassium can enter soil. This needs more wheat of potassium to say , it is undoubtedly a very good source of manure in the course in growing.It makes the organic matter, quick-acting phosphorus, the whole nitrogen and quick-acting potassium of the soil have obvious improvement that the straw is covered, Play a role in increasing fertily. Especially make the plain content increase of potassium reach 12. 5%, reach the extremely remarkable level. This is scarce to potassium plain level of soil, and the potassium source few areas come to talk, Have very important realistic meanings.Covering the ground evaporation capacity of reducing the soil and water of straw, has kept the topsoil holding the water yield , Cross the summer crops in winter to do, have obvious function of combatting a natural disaster.No matter fine or cloudy low temperature, the straw stamps the earth's surface of the field, temperature of office of 5 centimetres of underground and higher than the contrastdistrict, Icy one is more obvious on cloudy day. So the straw can play a role in regulating temperature to cover. Can lighten the freeze injury of the wheat, help the growing of the crop, make it spend cold season safely.The straw has good influence on the economic properties of the wheat to cover. Make wheat effective ear of grain and a thousand a grain of weigh obvious increaseseses after covering and make the output improve too.The straw pole of straw contains the abundant potassium, the straw covers the wheat paddock, the potassium that can not merely offer certain quantity is plain, And can improve the physics and chemistry properties of the soil, improve soil fertility, achieve the goal of increasing production and enlarge.3 Potassium produce to crop and soil potassium plain the influences of contents Looking in increasing Calais of output, two is ripe while making in the wheat rice,constructs the potassium in two seasons >Construct potassium does not construct the potassium for two seasons by> one season; Come and watch from unit the raising the output amounts of potassium and construct potassium construct potassium one season by>, wheat construct potassium superior to rice construct potassium one season, But the rice constructs;*'s aftereffect of constructing the potassium of wheat of aftereffect of the potassium. In case of permitting in condition, the wheat, rice should use the potassium, in a situation that fund and potassium resource are comparatively in short, But construct the potassium to use for the wheat and rice as one sees fit.The range which is short of potassium of soil is expanding, the degree is being strengthened. Constructed the decline that the potassium level can only slow down the potassium plain level of soil a few days ago, Can't raise the content of the soil potassium. So, improve the potassium plain state of soil, improving the soil supports potassium ability to bring enough one's attention4 China's miscellaneous effect function law fills a prescription and applies fertilizer to testAccording to result of the test of rice, we think :According to result of the test, Ns, Ps, K any factorses, in different to use competence, Reflect that it increases the production of the result and follows the decreasing progressively rate of remuneration .Under this type soil condition, the result of increasing the production oves of three key elements: N> K> P, and,, K No. three act as obvious each other P N, NPK cooperate superior to NP, NK, PK notably. Compared with contrast, not having obvious result of increasing production to use PK alone, the others are dealt with and reach and increasethe production of the result extremely notably .Under the terms, amount of application N at the high yield most,, K 12 respectively P this soil. N, P, K are respectively for the best applying fertilizer amount of 9 economy:*) *? T10.1 kg/667m -. 2.1 kg/667m - 6.9 kg/667m , we propose at city of Jingmen yellow brown earth type rice soils, to apply fertilizer quantity mix than rice: The suggestion of the countermeasure that 10-12kgN/667m2,2-3kgP2O5/667m2, 7-8kgK2O/667m2oPuts forward the fertility of Jingmen of improving and apply fertilizer on the foundation that originally studied.