日光温室基质栽培黄瓜化肥吸收利用规律的研究

Study on Regulation of Absorption and Utilization of Fertilizer in Solar Greenhouse Substrate Culture Cucumber

试验以新泰密刺黄瓜为试材,以蛭石∶鸡粪=2∶1为基质配方,研究了有机基质追施不同化肥对黄瓜产量及其N、P、K吸收利用规律的影响,结果表明:基质栽培处理的各项指标均好于土培对照,化肥追肥量较大的高肥与中肥处理的黄瓜产量极显著地高于其它处理;基质栽培各处理的黄瓜植株主要器官N、P、K浓度以及吸收量随化肥追肥量的增加而升高;N与K利用率随氮肥和钾肥追肥量的增加而降低,而P与之相反。氮肥和钾肥追肥量增加,基质中N、P、K的残留量也随之增加。

This experiment used Xintaimici cucumber as the experiment material,the ratio of vermiculite to chicken muck was 2∶1,as basic substrate. control cucumbers were planted in soil, and all other cucumbers were planted in substrates. There were five treatments, studied the effects of different fertilizing treatments on the yield and N、P、K absorption and utilization. The results showed: with the fertilizer amount increasing, the N、P、K concentration in the main organs and the N、P、K total absorption amount increased, those between high and middling treatments had not significant differences. The substrate culture promoted the growth of cucumber aerial plant. The utilization rate of N、K decreased, that of P increased, with the fertilizer amount increasing. The remain contents of N、P、K in the substrates increased with the fertilizer amount increasing. The experiment showed: the proper nitrogenous and potash fertilizer promoted cucumber absorbing P.Considering the production benefits, middling treatments were proper chemical fertilizer in this experiment.